WordNet

a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange (同)net, cyberspace
a set of protocols (including TCP) developed for the internet in the 1970s to get data from one network device to another (同)TCP/IP
work as an intern; "The young doctor is interning at the Medical Center this year"
an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
deprive of freedom; "During WW II, Japanese were interned in camps in the West"

PrepTutorEJDIC

(特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
=intern

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/05/21 07:30:20」(JST)

wiki ja

[Wiki ja表示]

同名の企業については「インターネット (企業)」をご覧ください。

インターネット（英: Internet^[1]）は、インターネット・プロトコル技術を利用してコンピュータネットワーク間の相互接続を行うことにより実現されるネットワークのことである。ただし、物のインターネットはパソコンを必要としない。

用語

しばしば略称でネットとも呼ぶ。「インターネット」の語の起源は一般名詞の「インターネットワーク（internetwork）」で、本来の意味は「ネットワーク間のネットワーク」や「複数のネットワークを相互接続したネットワーク」であるが^[2]、通常は固有名詞として、ARPANETを前身とする特定の世界的規模のネットワークを指す^[3]。特に日本語で「インターネット」と呼ぶ場合は、固有名詞の意味である場合が大半である。中国では「互联网」^[4]（互聯網）などと訳されている。

また、インターネット技術を使用した社内など組織内のネットワークはイントラネット、複数のイントラネット間あるいはインターネットとイントラネット間を接続したネットワークをエクストラネットとも呼ぶ。

「インターネット」はネットワークまたはネットワークシステムを表す用語である。電子メールやウェブなどはインターネットのネットワークを利用したサービスの一つである。

概要

管理と経緯

インターネットにおいて一般的に利用される各種の技術や管理制度は、歴史的経緯から一般に公開されているものが多い。インターネット上においては特定の集中した責任主体は存在しない。全体を1つの組織・ネットワークとして管理するのではなく、接続している組織が各ネットワークを管理する建前となっている。事実上の管理主体（ICANN、IETFなど）はあるにしても、それは接続している組織・ネットワークの総意として委任されていると言う建前になっている（国際的に中立的とされ、また一部は国際機関による管理もある）。それはインターネット・プロトコルの開発においても同様であり、RFC（Request for Comments）に具体化される。ただし、ICANNは非営利団体ながらも米商務省の傘下にあり、国際問題となっている。

インターネット接続が難しかった時代には、UUCPによる研究機関・大学や一部の企業などの間でのメール・ネットニュースの交換が多く見られた。専用線が高価だったための苦肉の策であった。その後、接続コストの低下に加え、World Wide Web（WWW）の流行、さらにパソコン向けOSのインターネット接続対応により、一般的ユーザへも爆発的な普及を見るに至った。情報の伝達速度が飛躍的に向上したため、物理的な距離と関係なく様々なコミュニティが形成され活動を行うようになった（IT革命、掲示板、SNSを参照）。

商用のインターネット利用についてはまだ歴史が浅く、20世紀末期の概ね1980年代後半に入ってからである。1990年代末期までは、個人向け接続サービスの大半は低速なダイヤルアップ接続で、従量制の課金が多くみられた。定額のブロードバンド接続サービスが低価格で提供され、爆発的に普及しはじめたのは2000年になってからであった。同時期に携帯電話でもインターネットへの接続サービスが提供されるようになり、携帯電話でのインターネット接続も一般化する。しかし、セキュリティに関する仕組みが現行のインターネットのプロトコルに組み込まれていないために、コンピュータウイルスの感染や不正アクセスなどの問題が後を絶たず、アプリケーションレベルで様々な対策が行われている。最近ではセキュアなネットワークを目指した新しい仕組みを作る動きも見られる。

プロトコル

インターネット・プロトコル（IP）は、インターネット上の通信に用いられる基本プロトコル（ネットワーク層（レイヤー））であり、その上にトランスポート（転送）層、さらにその上にアプリケーション層のプロトコルを組み合わせて用いる。転送プロトコルにはTCPやUDPなどがあり、アプリケーション・プロトコルにはWWWで用いられる HTTP、ネットニュースに用いられる NNTP、チャット（IRC）、ファイル転送（FTP）、ストリーミングなどさまざまな利用方法に伴うプロトコルが存在する。これらのプロトコルの定義の多くは RFC として公開されている。

インターネット・プロトコルは狭義のインターネット（The Internet）だけに使われるプロトコルではない。例えばインターネット・プロトコルや周辺技術を、企業内等のローカル・エリア・ネットワーク（LAN）環境で応用したものはイントラネットと呼ばれる。また、イントラネットを相互接続したものはエクストラネットと呼ばれる。

IPアドレス、ドメイン名

IPにおいては、基本的に通信するコンピュータごとに（厳密には機器のインターフェイスごとに）唯一無二の「IPアドレス」と呼ばれる固有番号を割り当てられることが通信時の前提となっており、IPを採用するインターネットにおいても、接続する各組織に対して固有のIPアドレスの領域（範囲）がそれぞれ割り当てられる。各組織はそれぞれに割り当てられたIPアドレス領域の中の固有の番号を、所有する各コンピュータに割り当てる。

IPアドレスは数字の羅列で人間には分かり難いというデメリットがあり、一般には英数字を使用した名前（ドメイン名）をIPアドレスに対応させて用いる。
例えば、「ja.wikipedia.org」というドメイン名は「208.80.152.2」というIPアドレスに対応する。インターネットに参加する各組織（研究機関、教育機関、企業、プロバイダ (ISP) 、協会・団体、政府機関その他）に対して、識別子として（広義の）ドメイン名が割り当てられており、各組織は所有する各コンピュータに対してホスト名を割り当てる。ホスト名とドメイン名をドット（.）でつないだものが各コンピュータの固有名（FQDN）となる。

本来接続先ホストにはIPアドレスを指定する必要があるが、（狭義の）ドメイン名とIPアドレスをDNSによって関連づけることにより、IPアドレスに代わってドメイン名を指定することが可能となっている。

しかし、現在主に使われている規格（IPv4）のアドレスが枯渇しつつあるためIPv6が開発されたが、対応にはネットワーク機器の更新が必要である上、IPv4とIPv6の機器間では直接通信ができない（IPv6の機器はほぼIPv4にも対応しているのであまり問題にはならないが）。2011年2月現在、日本での完全な対応は一部のプロバイダや学術ネットワークにとどまっている。

アクセス

インターネットへのアクセス（接続）は、一般にはインターネット・プロトコル技術を搭載したインターネット端末を使用して、インターネットサービスプロバイダ経由で接続する。また独自ネットワークやイントラネットから、ゲートウェイ等を経由して接続できる場合もある。初期のインターネットでは、使用言語は英語、文字コードはASCII、文字はラテン文字で、接続デバイスは各種のコンピュータが大多数であった。

1990年以降のインターネットの世界的な普及により、現在では各種のコンピュータに加えて各種の携帯電話、ゲーム機、家電、産業機器などがインターネット端末機能を持つようになった。接続形態も従来の有線やダイヤルアップ接続に加えて各種の無線通信が一般化した。インターネット上で使用可能なサービスも、当初の電子メールやファイル転送などから、World Wide Web、インターネット電話、検索エンジン、ソーシャル・ネットワーキング・サービスなどに広がり、そのユーザインタフェースもグラフィカルユーザインタフェースやマルチメディア対応を含んだものも普及した。またコンピューティングの利用形態としてSaaSやクラウドコンピューティングなどの表現や概念が普及する基盤ともなった。これらと平行して、各種の国際化と地域化、多言語化、他のネットワークや技術との相互接続や相互運用性などが進んだ。

歴史

詳細は「インターネットの歴史」を参照

1960年、インターネットの前身ARPANETに直接影響を及ぼした概念であるJ・C・R・リックライダーのタイムシェアリングシステムが発表される。^[5]

1969年10月29日、後のルータの原型となったIMPを用いてUCLAとスタンフォード研究所（SRI）間が接続され^[6]^[7]、同年12月5日までにUCサンタバーバラ、ユタ大学が接続され4つのノードのインターネットが実現された。

1983年、ARPANETがプロトコルをそれまで利用していたNetwork Control ProgramからTCP/IPに切り替える。

1984年9月、村井純がテープメディアの物理的な配送の代わりとして電話回線を用いた300bpsの速度の回線で慶應義塾大学と東京工業大学を接続した。同年10月に東京大学が接続され、日本のインターネットの始まりであるJUNETに拡大する。^[8]

1985年、アメリカの「全国科学財団」による学術研究用のネットワーク基盤NSFNetが作られ、インターネットのバックボーンの役割がARPANETからNSFNetへ移行する。

1988年、アメリカで商用インターネットが始まる。同年、日本でWIDEプロジェクト開始。

1989年、商用ネットワークとNSFNetとの接続が開始される。

1990年、スイスの素粒子物理学研究所・CERNの研究員であったティム・バーナーズ＝リーは、当時上司だったロバート・カイリューらの協力によりWorld Wide Webシステムのための最初のサーバとブラウザを完成させる。

1994年7月、アメリカのタイム誌で、「インターネットは核攻撃下でのコミュニケーションの生き残りを想定して開発された」^[9]という記事が掲載される。以降、ARPANETは核戦争時のための軍事ネットであるという俗説が流布するようになる。一方、ARPANET立ち上げ時のIPTO責任者であったロバート・テイラーは、この記事に対して事実とは異なる旨、正式な抗議をタイム誌に対して行った。

1995年、NSFNetは民間へ移管され、Windows95の登場で一般の人にインターネットが急速に広まった。なお、Windows95の初期バージョンではインターネット関連の機能は「Microsoft Plus!」による拡張機能とされていたが、OSR2以降は標準搭載されている。

1997年から2007年までの、人口100人当りのインターネットユーザーの割合（青は先進国、オレンジは開発途上国、黄色は世界平均。出典：国際電気通信連合)

1999年にInternet of Thingsという用語が提唱された。

1999年にはADSLによるインターネットへの接続サービスが開始される。

2001年にはFTTH,CATV,無線通信によるインターネットへの接続サービスが開始される。

2002年から2005年に掛けて、友人紹介型のソーシャルネットワークサービスが提供され始める。

2004年にWeb2.0の概念が提唱される。

2005年は2010年代に一般的な日常生活で使われるようになる様々なサービスが提供開始した時期である。Google Mapsのサービス提供開始, iTunes Music Store の日本へのサービス提供開始、2005年末にはYoutubeがサービスを提供を開始した。特にWebサービスに関わる重要な出来事が集中している。この年に人類史上初めて巨大知の基盤が成立したと考えられる。

2004年末にはNintendo DSが、2005年末にXbox360が、2006年末にはPS3とWiiがオンライン機能を標準搭載し発売された。2005年以降、オンライン対戦の一般化が進んだ。

2005年からネットレーベルの音楽業界への台頭が始まる。

2006年にはPLCによるインターネットへの接続サービスが開始される。

2000年代後半にはYoutube,mixi,Facebook,Twitter等が流行し、インターネットにおけるコミュニケーション活動が活発化した。

2000年から2010年に掛けて、インターネットに接続される計算機やセンサーが加速度的に増えるに従って、インターネットを介して膨大な実世界データが収集可能となり、そのようなデータを処理する専門の職業まで現れた。(データサイエンティスト)

社会の変化

2007年よりYoutubeやニコニコ動画などの動画共有サービス, 2010年よりSoundCloud等の音声ファイル共有サービスを用いた音楽活動が活発化した。特にDTMを行う者には人気となった。若年層にはネット上の音楽活動で有名になりメジャーデビューする音楽家が多数現れるようになった。現在のインターネットは、音楽を筆頭として、遠く隔たっていた様々な文化が融合し、新たな文化が生み出される文化交流の基盤にもなっている。

WWWが発明された1990年から2010年までの20年間に、インターネットは学術ネットワークから日常生活のインフラへと変革を遂げたと言っても過言では無くなっている。

情報格差

詳細は「情報格差」を参照

世界的に常時接続環境が提供されているのは都市部が中心で、山間部や離島などとの情報格差が問題になっている。その都市部や先進国でも当初、パソコンが高価だったことや、操作体系が複雑だったことから、アルビン・トフラーは、パソコンスキルの有無や経済力で情報格差が生じると予想していた。だが後に「誤算があった」として、パソコンの低価格化などにより、誰にでも広く普及すると発言を修正した。また操作方法も、インターネットに対応したフィーチャーフォン（3G携帯）、スマートフォン、タブレット端末、或いはスマートテレビなどの登場で、かつてのパソコンと比べ格段に容易になり、ネットアクセスに高度なスキルが余り必要とされなくなったこともあり、操作スキルの有無による格差も以前ほど生じにくくなっている。

発展途上国では多くの国民にとって端末のパソコンが高価であり通信料金も高いため、インターネットカフェがインターネットの普及を支えているが、近年は途上国向けの格安パソコンや格安スマートフォンが徐々に普及しつつある。

またインターネットに繋がっている事を前提とした情報発信などが非常に増え、情報格差を生む要因にもなっているものの、一方で上述のような理由で、誰でもネットを始めやすい環境も生まれている。

脚注

[ヘルプ]

^ アメリカ英語発音: [ˈintərˌnet]、イギリス英語発音: [ˈɪntənɛt]
^ 「inter-state」が「州間高速道路」、「inter-national」が「国際」を意味するのと同様。インターネットの原型となったARPANETは、研究機関の間のネットワークであった。この意味を明示的に表す場合は「an internet」と呼ぶ場合もある。
^ この意味を明示的に表す場合は「The Internet、The Net」と呼ぶ場合もある。
^ "互联网络の意味-中国語辞書-Weblio日中中日辞典". （Weblio）. 2016年4月25日閲覧。
^ Man-Computer Symbiosis 「人間とコンピュータの共生」 1960年3月
^ インターネットが40周年最初に送られたメッセージは「LO」 - ITmedia News
^ 40th Anniversary of the Internet / UCLA Spotlight
^ インターネット歴史の一幕：JUNETの誕生 - JPNIC ニュースレターNo.29
^ "BATTLE FOR THE SOUL OF THE INTERNET". TIME, 1994年7月25日。

外部リンク

インターネットとは（JPNIC）

ウィキペディアの姉妹プロジェクトで「インターネット」に関する情報が検索できます。
	ウィクショナリーの辞書項目
	ウィキブックスの教科書や解説書
	ウィキクォートの引用句集
	ウィキソースの原文
	コモンズでメディア
	ウィキニュースのニュース
	ウィキバーシティの学習支援

この項目は、インターネットやウェブに関連した書きかけの項目です。この項目を加筆・訂正などしてくださる協力者を求めています（PJ:コンピュータ/P:コンピュータ）。

wiki en

[Wiki en表示]

The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link billions of devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and peer-to-peer networks for file sharing.

The origins of the Internet date back to research commissioned by the United States federal government in the 1960s to build robust, fault-tolerant communication via computer networks.^[1] The primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and military networks in the 1980s. However, it only became accessible universally when the European Organization for Nuclear Research launched the World Wide Web. The funding of the National Science Foundation Network as a new backbone in the 1980s, as well as private funding for other commercial extensions, led to worldwide participation in the development of new networking technologies, and the merger of many networks.^[2] The linking of commercial networks and enterprises by the early 1990s marks the beginning of the transition to the modern Internet,^[3] and generated a sustained exponential growth as generations of institutional, personal, and mobile computers were connected to the network. Although the Internet has been widely used by academia since the 1980s, the commercialization incorporated its services and technologies into virtually every aspect of modern life. Internet use grew rapidly in the West from the mid-1990s and from the late 1990s in the developing world.^[4] In the 20 years since 1995, Internet use has grown 100-times, measured for the period of one year, to over one third of the world population.^[5]^[6]

Most traditional communications media, including telephony and television, are being reshaped or redefined by the Internet, giving birth to new services such as Internet telephony and Internet television. Newspaper, book, and other print publishing are adapting to website technology, or are reshaped into blogging and web feeds. The entertainment industry was initially the fastest growing segment on the Internet.^{[citation needed]} The Internet has enabled and accelerated new forms of personal interactions through instant messaging, Internet forums, and social networking. Online shopping has grown exponentially both for major retailers and small artisans and traders. Business-to-business and financial services on the Internet affect supply chains across entire industries.

The Internet has no centralized governance in either technological implementation or policies for access and usage; each constituent network sets its own policies.^[7] Only the overreaching definitions of the two principal name spaces in the Internet, the Internet Protocol address space and the Domain Name System (DNS), are directed by a maintainer organization, the Internet Corporation for Assigned Names and Numbers (ICANN). The technical underpinning and standardization of the core protocols is an activity of the Internet Engineering Task Force (IETF), a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise.^[8]

1 Terminology
2 History
3 Governance
4 Infrastructure
- 4.1 Routing and service tiers
- 4.2 Access
- 4.3 Structure
5 Protocols
6 Services
- 6.1 World Wide Web
- 6.2 Communication
- 6.3 Data transfer
7 Social impact
- 7.1 Users
- 7.2 Usage
- 7.3 Social networking and entertainment
- 7.4 Electronic business
- 7.5 Telecommuting
- 7.6 Crowdsourcing
- 7.7 Collaborative publishing
- 7.8 Politics and political revolutions
- 7.9 Philanthropy
8 Security
- 8.1 Surveillance
- 8.2 Censorship
9 Performance
- 9.1 Outages
- 9.2 Energy use
10 See also
11 References
12 Further reading
13 External links

Terminology

The Internet Messenger by Buky Schwartz in Holon.

The term Internet, when used to refer to the specific global system of interconnected Internet Protocol (IP) networks, is a proper noun^[9] and may be written with an initial capital letter. In common use and the media, it is often not capitalized, viz. the internet. Some guides specify that the word should be capitalized when used as a noun, but not capitalized when used as an adjective.^[10]

The Internet is also often referred to as the Net, as a short form of network.

Historically, as early as 1849, the word internetted was used uncapitalized as an adjective, meaning Interconnected or interwoven.^[11] The designers of early computer networks used internet both as a noun and as a verb in shorthand form of internetwork or internetworking, meaning interconnecting computer networks.^[12]

The terms Internet and World Wide Web are often used interchangeably in everyday speech; it is common to speak of "going on the Internet" when invoking a web browser to view web pages. However, the World Wide Web or the Web is only one of a large number of Internet services. The Web is a collection of interconnected documents (web pages) and other web resources, linked by hyperlinks and URLs.^[13] As another point of comparison, Hypertext Transfer Protocol, or HTTP, is the language used on the Web for information transfer, yet it is just one of many languages or protocols that can be used for communication on the Internet.^[14]

The term Interweb is a portmanteau of Internet and World Wide Web typically used sarcastically to parody a technically unsavvy user.

History

Research into packet switching started in the early 1960s,^[15] and packet switched networks such as the NPL network,^[16] ARPANET, CYCLADES,^[17]^[18] Merit Network,^[19] Tymnet, and Telenet, were developed in the late 1960s and 1970s using a variety of protocols.^[20] The ARPANET project led to the development of protocols for internetworking, by which multiple separate networks could be joined into a single network of networks.^[21]

ARPANET development began with two network nodes which were interconnected between the Network Measurement Center at the University of California, Los Angeles (UCLA) Henry Samueli School of Engineering and Applied Science directed by Leonard Kleinrock, and the NLS system at SRI International (SRI) by Douglas Engelbart in Menlo Park, California, on 29 October 1969.^[22] The third site was the Culler-Fried Interactive Mathematics Center at the University of California, Santa Barbara, followed by the University of Utah Graphics Department. In an early sign of future growth, fifteen sites were connected to the young ARPANET by the end of 1971.^[23]^[24] These early years were documented in the 1972 film Computer Networks: The Heralds of Resource Sharing.

Early international collaborations on the ARPANET were rare. European developers were concerned with developing the X.25 networks.^[25] Notable exceptions were the Norwegian Seismic Array (NORSAR) in June 1973, followed in 1973 by Sweden with satellite links to the Tanum Earth Station and Peter T. Kirstein's research group in the United Kingdom, initially at the Institute of Computer Science, University of London and later at University College London.^[26]^[27]^[28]

In December 1974, RFC 675 (Specification of Internet Transmission Control Program), by Vinton Cerf, Yogen Dalal, and Carl Sunshine, used the term internet as a shorthand for internetworking and later RFCs repeated this use.^[29] Access to the ARPANET was expanded in 1981 when the National Science Foundation (NSF) funded the Computer Science Network (CSNET). In 1982, the Internet Protocol Suite (TCP/IP) was standardized, which permitted worldwide proliferation of interconnected networks.

T3 NSFNET Backbone, c. 1992.

TCP/IP network access expanded again in 1986 when the National Science Foundation Network (NSFNet) provided access to supercomputer sites in the United States for researchers, first at speeds of 56 kbit/s and later at 1.5 Mbit/s and 45 Mbit/s.^[30] Commercial Internet service providers (ISPs) emerged in the late 1980s and early 1990s. The ARPANET was decommissioned in 1990. By 1995, the Internet was fully commercialized in the U.S. when the NSFNet was decommissioned, removing the last restrictions on use of the Internet to carry commercial traffic.^[31] The Internet rapidly expanded in Europe and Australia in the mid to late 1980s^[32]^[33] and to Asia in the late 1980s and early 1990s.^[34]

The beginning of dedicated transatlantic communication between the NSFNET and networks in Europe was established with a low-speed satellite relay between Princeton University and Stockholm, Sweden in December 1988.^[35] Although other network protocols such as UUCP had global reach well before this time, this marked the beginning of the Internet as an intercontinental network.

Slightly over a year later in March 1990, the first high-speed T1 (1.5 Mbit/s) link between the NSFNET and Europe was installed between Cornell University and CERN, allowing much more robust communications than were capable with satellites.^[36] Six months later Tim Berners-Lee would begin writing WorldWideWeb, the first web browser after two years of lobbying CERN management. By Christmas 1990, Berners-Lee had built all the tools necessary for a working Web: the HyperText Transfer Protocol (HTTP) 0.9,^[37] the HyperText Markup Language (HTML), the first Web browser (which was also a HTML editor and could access Usenet newsgroups and FTP files), the first HTTP server software (later known as CERN httpd), the first web server (http://info.cern.ch), and the first Web pages that described the project itself.

Since 1995 the Internet has tremendously impacted culture and commerce, including the rise of near instant communication by email, instant messaging, telephony (Voice over Internet Protocol or VoIP), two-way interactive video calls, and the World Wide Web^[38] with its discussion forums, blogs, social networking, and online shopping sites. Increasing amounts of data are transmitted at higher and higher speeds over fiber optic networks operating at 1-Gbit/s, 10-Gbit/s, or more.

The Internet continues to grow, driven by ever greater amounts of online information and knowledge, commerce, entertainment and social networking.^[41] During the late 1990s, it was estimated that traffic on the public Internet grew by 100 percent per year, while the mean annual growth in the number of Internet users was thought to be between 20% and 50%.^[42] This growth is often attributed to the lack of central administration, which allows organic growth of the network, as well as the non-proprietary nature of the Internet protocols, which encourages vendor interoperability and prevents any one company from exerting too much control over the network.^[43] As of 31 March 2011, the estimated total number of Internet users was 2.095 billion (30.2% of world population).^[44] It is estimated that in 1993 the Internet carried only 1% of the information flowing through two-way telecommunication, by 2000 this figure had grown to 51%, and by 2007 more than 97% of all telecommunicated information was carried over the Internet.^[45]

Governance

ICANN headquarters in the Playa Vista neighborhood of Los Angeles, California, United States.

The Internet is a global network comprising many voluntarily interconnected autonomous networks. It operates without a central governing body.

The technical underpinning and standardization of the core protocols (IPv4 and IPv6) is an activity of the Internet Engineering Task Force (IETF), a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise.

To maintain interoperability, the principal name spaces of the Internet are administered by the Internet Corporation for Assigned Names and Numbers (ICANN). ICANN is governed by an international board of directors drawn from across the Internet technical, business, academic, and other non-commercial communities. ICANN coordinates the assignment of unique identifiers for use on the Internet, including domain names, Internet Protocol (IP) addresses, application port numbers in the transport protocols, and many other parameters. Globally unified name spaces are essential for maintaining the global reach of the Internet. This role of ICANN distinguishes it as perhaps the only central coordinating body for the global Internet.^[46]

Regional Internet Registries (RIRs) allocate IP addresses:

African Network Information Center (AfriNIC) for Africa
American Registry for Internet Numbers (ARIN) for North America
Asia-Pacific Network Information Centre (APNIC) for Asia and the Pacific region
Latin American and Caribbean Internet Addresses Registry (LACNIC) for Latin America and the Caribbean region
Réseaux IP Européens – Network Coordination Centre (RIPE NCC) for Europe, the Middle East, and Central Asia

The National Telecommunications and Information Administration, an agency of the United States Department of Commerce, continues to have final approval over changes to the DNS root zone.^[47]^[48]^[49]

The Internet Society (ISOC) was founded in 1992 with a mission to "assure the open development, evolution and use of the Internet for the benefit of all people throughout the world".^[50] Its members include individuals (anyone may join) as well as corporations, organizations, governments, and universities. Among other activities ISOC provides an administrative home for a number of less formally organized groups that are involved in developing and managing the Internet, including: the Internet Engineering Task Force (IETF), Internet Architecture Board (IAB), Internet Engineering Steering Group (IESG), Internet Research Task Force (IRTF), and Internet Research Steering Group (IRSG).

On 16 November 2005, the United Nations-sponsored World Summit on the Information Society in Tunis established the Internet Governance Forum (IGF) to discuss Internet-related issues.

Infrastructure

2007 map showing submarine fiberoptic telecommunication cables around the world.

The communications infrastructure of the Internet consists of its hardware components and a system of software layers that control various aspects of the architecture.

Routing and service tiers

Packet routing across the Internet involves several tiers of Internet service providers.

Internet service providers establish the worldwide connectivity between individual networks at various levels of scope. End-users who only access the Internet when needed to perform a function or obtain information, represent the bottom of the routing hierarchy. At the top of the routing hierarchy are the tier 1 networks, large telecommunication companies that exchange traffic directly with each other via peering agreements. Tier 2 and lower level networks buy Internet transit from other providers to reach at least some parties on the global Internet, though they may also engage in peering. An ISP may use a single upstream provider for connectivity, or implement multihoming to achieve redundancy and load balancing. Internet exchange points are major traffic exchanges with physical connections to multiple ISPs.

Large organizations, such as academic institutions, large enterprises, and governments, may perform the same function as ISPs, engaging in peering and purchasing transit on behalf of their internal networks. Research networks tend to interconnect with large subnetworks such as GEANT, GLORIAD, Internet2, and the UK's national research and education network, JANET.

It has been determined that both the Internet IP routing structure and hypertext links of the World Wide Web are examples of scale-free networks.^[51]

Computers and routers use routing tables in their operating system to direct IP packets to the next-hop router or destination. Routing tables are maintained by manual configuration or automatically by routing protocols. End-nodes typically use a default route that points toward an ISP providing transit, while ISP routers use the Border Gateway Protocol to establish the most efficient routing across the complex connections of the global Internet.

Access

Common methods of Internet access by users include dial-up with a computer modem via telephone circuits, broadband over coaxial cable, fiber optics or copper wires, Wi-Fi, satellite and cellular telephone technology (3G, 4G). The Internet may often be accessed from computers in libraries and Internet cafes. Internet access points exist in many public places such as airport halls and coffee shops. Various terms are used, such as public Internet kiosk, public access terminal, and Web payphone. Many hotels also have public terminals, though these are usually fee-based. These terminals are widely accessed for various usages, such as ticket booking, bank deposit, or online payment. Wi-Fi provides wireless access to the Internet via local computer networks. Hotspots providing such access include Wi-Fi cafes, where users need to bring their own wireless devices such as a laptop or PDA. These services may be free to all, free to customers only, or fee-based.

Grassroots efforts have led to wireless community networks. Commercial Wi-Fi services covering large city areas are in place in London, Vienna, Toronto, San Francisco, Philadelphia, Chicago and Pittsburgh. The Internet can then be accessed from such places as a park bench.^[52] Apart from Wi-Fi, there have been experiments with proprietary mobile wireless networks like Ricochet, various high-speed data services over cellular phone networks, and fixed wireless services. High-end mobile phones such as smartphones in general come with Internet access through the phone network. Web browsers such as Opera are available on these advanced handsets, which can also run a wide variety of other Internet software. More mobile phones have Internet access than PCs, though this is not as widely used.^[53] An Internet access provider and protocol matrix differentiates the methods used to get online.

Structure

Many computer scientists describe the Internet as a "prime example of a large-scale, highly engineered, yet highly complex system".^[54] The structure was found to be highly robust to random failures,^[55] yet, very vulnerable to intentional attacks.^[56]

The Internet structure and its usage characteristics have been studied extensively and the possibility of developing alternative structures has been investigated.^[57]

Protocols

While the hardware components in the Internet infrastructure can often be used to support other software systems, it is the design and the standardization process of the software that characterizes the Internet and provides the foundation for its scalability and success. The responsibility for the architectural design of the Internet software systems has been assumed by the Internet Engineering Task Force (IETF).^[58] The IETF conducts standard-setting work groups, open to any individual, about the various aspects of Internet architecture. Resulting contributions and standards are published as Request for Comments (RFC) documents on the IETF web site.

The principal methods of networking that enable the Internet are contained in specially designated RFCs that constitute the Internet Standards. Other less rigorous documents are simply informative, experimental, or historical, or document the best current practices (BCP) when implementing Internet technologies.

The Internet standards describe a framework known as the Internet protocol suite. This is a model architecture that divides methods into a layered system of protocols, originally documented in RFC 1122 and RFC 1123. The layers correspond to the environment or scope in which their services operate. At the top is the application layer, space for the application-specific networking methods used in software applications. For example, a web browser program uses the client-server application model and a specific protocol of interaction between servers and clients, while many file-sharing systems use a peer-to-peer paradigm. Below this top layer, the transport layer connects applications on different hosts with a logical channel through the network with appropriate data exchange methods.

Underlying these layers are the networking technologies that interconnect networks at their borders and hosts via the physical connections. The Internet layer enables computers to identify and locate each other via Internet Protocol (IP) addresses, and routes their traffic via intermediate (transit) networks. Last, at the bottom of the architecture is the link layer, which provides connectivity between hosts on the same network link, such as a physical connection in the form of a local area network (LAN) or a dial-up connection. The model, also known as TCP/IP, is designed to be independent of the underlying hardware, which the model, therefore, does not concern itself with in any detail. Other models have been developed, such as the OSI model, that attempt to be comprehensive in every aspect of communications. While many similarities exist between the models, they are not compatible in the details of description or implementation; indeed, TCP/IP protocols are usually included in the discussion of OSI networking.

As user data is processed through the protocol stack, each abstraction layer adds encapsulation information at the sending host. Data is transmitted over the wire at the link level between hosts and routers. Encapsulation is removed by the receiving host. Intermediate relays update link encapsulation at each hop, and inspect the IP layer for routing purposes.

The most prominent component of the Internet model is the Internet Protocol (IP), which provides addressing systems (IP addresses) for computers on the Internet. IP enables internetworking and, in essence, establishes the Internet itself. Internet Protocol Version 4 (IPv4) is the initial version used on the first generation of the Internet and is still in dominant use. It was designed to address up to ~4.3 billion (10⁹) Internet hosts. However, the explosive growth of the Internet has led to IPv4 address exhaustion, which entered its final stage in 2011,^[59] when the global address allocation pool was exhausted. A new protocol version, IPv6, was developed in the mid-1990s, which provides vastly larger addressing capabilities and more efficient routing of Internet traffic. IPv6 is currently in growing deployment around the world, since Internet address registries (RIRs) began to urge all resource managers to plan rapid adoption and conversion.^[60]

IPv6 is not directly interoperable by design with IPv4. In essence, it establishes a parallel version of the Internet not directly accessible with IPv4 software. Thus, translation facilities must exist for internetworking or nodes must have duplicate networking software for both networks. Essentially all modern computer operating systems support both versions of the Internet Protocol. Network infrastructure, however, is still lagging in this development. Aside from the complex array of physical connections that make up its infrastructure, the Internet is facilitated by bi- or multi-lateral commercial contracts, e.g., peering agreements, and by technical specifications or protocols that describe the exchange of data over the network. Indeed, the Internet is defined by its interconnections and routing policies.

Services

The Internet carries many network services, most prominently mobile apps such as social media apps, the World Wide Web, electronic mail, multiplayer online games, Internet telephony, and file sharing services.

World Wide Web

This NeXT Computer was used by Tim Berners-Lee at CERN and became the world's first Web server.

Many people use the terms Internet and World Wide Web, or just the Web, interchangeably, but the two terms are not synonymous. The World Wide Web is the primary application that billions of people use on the Internet, and it has changed their lives immeasurably.^[61]^[62] However, the Internet provides many other services. The Web is a global set of documents, images and other resources, logically interrelated by hyperlinks and referenced with Uniform Resource Identifiers (URIs). URIs symbolically identify services, servers, and other databases, and the documents and resources that they can provide. Hypertext Transfer Protocol (HTTP) is the main access protocol of the World Wide Web. Web services also use HTTP to allow software systems to communicate in order to share and exchange business logic and data.

World Wide Web browser software, such as Microsoft's Internet Explorer, Mozilla Firefox, Opera, Apple's Safari, and Google Chrome, lets users navigate from one web page to another via hyperlinks embedded in the documents. These documents may also contain any combination of computer data, including graphics, sounds, text, video, multimedia and interactive content that runs while the user is interacting with the page. Client-side software can include animations, games, office applications and scientific demonstrations. Through keyword-driven Internet research using search engines like Yahoo! and Google, users worldwide have easy, instant access to a vast and diverse amount of online information. Compared to printed media, books, encyclopedias and traditional libraries, the World Wide Web has enabled the decentralization of information on a large scale.

The Web has also enabled individuals and organizations to publish ideas and information to a potentially large audience online at greatly reduced expense and time delay. Publishing a web page, a blog, or building a website involves little initial cost and many cost-free services are available. However, publishing and maintaining large, professional web sites with attractive, diverse and up-to-date information is still a difficult and expensive proposition. Many individuals and some companies and groups use web logs or blogs, which are largely used as easily updatable online diaries. Some commercial organizations encourage staff to communicate advice in their areas of specialization in the hope that visitors will be impressed by the expert knowledge and free information, and be attracted to the corporation as a result.

One example of this practice is Microsoft, whose product developers publish their personal blogs in order to pique the public's interest in their work.^{[original research?]} Collections of personal web pages published by large service providers remain popular and have become increasingly sophisticated. Whereas operations such as Angelfire and GeoCities have existed since the early days of the Web, newer offerings from, for example, Facebook and Twitter currently have large followings. These operations often brand themselves as social network services rather than simply as web page hosts.^{[citation needed]}

Advertising on popular web pages can be lucrative, and e-commerce or the sale of products and services directly via the Web continues to grow.

When the Web developed in the 1990s, a typical web page was stored in completed form on a web server, formatted in HTML, complete for transmission to a web browser in response to a request. Over time, the process of creating and serving web pages has become dynamic, creating a flexible design, layout, and content. Websites are often created using content management software with, initially, very little content. Contributors to these systems, who may be paid staff, members of an organization or the public, fill underlying databases with content using editing pages designed for that purpose while casual visitors view and read this content in HTML form. There may or may not be editorial, approval and security systems built into the process of taking newly entered content and making it available to the target visitors.

Communication

Email is an important communications service available on the Internet. The concept of sending electronic text messages between parties in a way analogous to mailing letters or memos predates the creation of the Internet. Pictures, documents, and other files are sent as email attachments. Emails can be cc-ed to multiple email addresses.

Internet telephony is another common communications service made possible by the creation of the Internet. VoIP stands for Voice-over-Internet Protocol, referring to the protocol that underlies all Internet communication. The idea began in the early 1990s with walkie-talkie-like voice applications for personal computers. In recent years many VoIP systems have become as easy to use and as convenient as a normal telephone. The benefit is that, as the Internet carries the voice traffic, VoIP can be free or cost much less than a traditional telephone call, especially over long distances and especially for those with always-on Internet connections such as cable or ADSL. VoIP is maturing into a competitive alternative to traditional telephone service. Interoperability between different providers has improved and the ability to call or receive a call from a traditional telephone is available. Simple, inexpensive VoIP network adapters are available that eliminate the need for a personal computer.

Voice quality can still vary from call to call, but is often equal to and can even exceed that of traditional calls. Remaining problems for VoIP include emergency telephone number dialing and reliability. Currently, a few VoIP providers provide an emergency service, but it is not universally available. Older traditional phones with no "extra features" may be line-powered only and operate during a power failure; VoIP can never do so without a backup power source for the phone equipment and the Internet access devices. VoIP has also become increasingly popular for gaming applications, as a form of communication between players. Popular VoIP clients for gaming include Ventrilo and Teamspeak. Modern video game consoles also offer VoIP chat features.

Data transfer

File sharing is an example of transferring large amounts of data across the Internet. A computer file can be emailed to customers, colleagues and friends as an attachment. It can be uploaded to a website or File Transfer Protocol (FTP) server for easy download by others. It can be put into a "shared location" or onto a file server for instant use by colleagues. The load of bulk downloads to many users can be eased by the use of "mirror" servers or peer-to-peer networks. In any of these cases, access to the file may be controlled by user authentication, the transit of the file over the Internet may be obscured by encryption, and money may change hands for access to the file. The price can be paid by the remote charging of funds from, for example, a credit card whose details are also passed – usually fully encrypted – across the Internet. The origin and authenticity of the file received may be checked by digital signatures or by MD5 or other message digests. These simple features of the Internet, over a worldwide basis, are changing the production, sale, and distribution of anything that can be reduced to a computer file for transmission. This includes all manner of print publications, software products, news, music, film, video, photography, graphics and the other arts. This in turn has caused seismic shifts in each of the existing industries that previously controlled the production and distribution of these products.

Streaming media is the real-time delivery of digital media for the immediate consumption or enjoyment by end users. Many radio and television broadcasters provide Internet feeds of their live audio and video productions. They may also allow time-shift viewing or listening such as Preview, Classic Clips and Listen Again features. These providers have been joined by a range of pure Internet "broadcasters" who never had on-air licenses. This means that an Internet-connected device, such as a computer or something more specific, can be used to access on-line media in much the same way as was previously possible only with a television or radio receiver. The range of available types of content is much wider, from specialized technical webcasts to on-demand popular multimedia services. Podcasting is a variation on this theme, where – usually audio – material is downloaded and played back on a computer or shifted to a portable media player to be listened to on the move. These techniques using simple equipment allow anybody, with little censorship or licensing control, to broadcast audio-visual material worldwide.

Digital media streaming increases the demand for network bandwidth. For example, standard image quality needs 1 Mbit/s link speed for SD 480p, HD 720p quality requires 2.5 Mbit/s, and the top-of-the-line HDX quality needs 4.5 Mbit/s for 1080p.^[63]

Webcams are a low-cost extension of this phenomenon. While some webcams can give full-frame-rate video, the picture either is usually small or updates slowly. Internet users can watch animals around an African waterhole, ships in the Panama Canal, traffic at a local roundabout or monitor their own premises, live and in real time. Video chat rooms and video conferencing are also popular with many uses being found for personal webcams, with and without two-way sound. YouTube was founded on 15 February 2005 and is now the leading website for free streaming video with a vast number of users. It uses a flash-based web player to stream and show video files. Registered users may upload an unlimited amount of video and build their own personal profile. YouTube claims that its users watch hundreds of millions, and upload hundreds of thousands of videos daily. Currently, YouTube also uses an HTML5 player.^[64]

Social impact

The Internet has enabled new forms of social interaction, activities, and social associations. This phenomenon has given rise to the scholarly study of the sociology of the Internet.

Users

Internet users per 100 inhabitants Source: International Telecommunications Union.^[65]^[66]

Internet users by language^[67]

Website content languages^[68]

Internet usage has seen tremendous growth. From 2000 to 2009, the number of Internet users globally rose from 394 million to 1.858 billion.^[69] By 2010, 22 percent of the world's population had access to computers with 1 billion Google searches every day, 300 million Internet users reading blogs, and 2 billion videos viewed daily on YouTube.^[70] In 2014 the world's Internet users surpassed 3 billion or 43.6 percent of world population, but two-thirds of the users came from richest countries, with 78.0 percent of Europe countries population using the Internet, followed by 57.4 percent of the Americas.^[71]

The prevalent language for communication on the Internet has been English. This may be a result of the origin of the Internet, as well as the language's role as a lingua franca. Early computer systems were limited to the characters in the American Standard Code for Information Interchange (ASCII), a subset of the Latin alphabet.

After English (27%), the most requested languages on the World Wide Web are Chinese (25%), Spanish (8%), Japanese (5%), Portuguese and German (4% each), Arabic, French and Russian (3% each), and Korean (2%).^[67] By region, 42% of the world's Internet users are based in Asia, 24% in Europe, 14% in North America, 10% in Latin America and the Caribbean taken together, 6% in Africa, 3% in the Middle East and 1% in Australia/Oceania.^[72] The Internet's technologies have developed enough in recent years, especially in the use of Unicode, that good facilities are available for development and communication in the world's widely used languages. However, some glitches such as mojibake (incorrect display of some languages' characters) still remain.

In an American study in 2005, the percentage of men using the Internet was very slightly ahead of the percentage of women, although this difference reversed in those under 30. Men logged on more often, spent more time online, and were more likely to be broadband users, whereas women tended to make more use of opportunities to communicate (such as email). Men were more likely to use the Internet to pay bills, participate in auctions, and for recreation such as downloading music and videos. Men and women were equally likely to use the Internet for shopping and banking.^[73] More recent studies indicate that in 2008, women significantly outnumbered men on most social networking sites, such as Facebook and Myspace, although the ratios varied with age.^[74] In addition, women watched more streaming content, whereas men downloaded more.^[75] In terms of blogs, men were more likely to blog in the first place; among those who blog, men were more likely to have a professional blog, whereas women were more likely to have a personal blog.^[76]

According to forecasts by Euromonitor International, 44% of the world's population will be users of the Internet by 2020.^[77] Splitting by country, in 2012 Iceland, Norway, Sweden, the Netherlands, and Denmark had the highest Internet penetration by the number of users, with 93% or more of the population with access.^[78]

Several neologisms exist that refer to Internet users: Netizen (as in as in "citizen of the net")^[79] refers to those actively involved in improving online communities, the Internet in general or surrounding political affairs and rights such as free speech,^[80]^[81] Internaut refers to operators or technically highly capable users of the Internet,^[82]^[83] digital citizen refers to a person using the Internet in order to engage in society, politics, and government participation.^[84]

Usage

The Internet allows greater flexibility in working hours and location, especially with the spread of unmetered high-speed connections. The Internet can be accessed almost anywhere by numerous means, including through mobile Internet devices. Mobile phones, datacards, handheld game consoles and cellular routers allow users to connect to the Internet wirelessly. Within the limitations imposed by small screens and other limited facilities of such pocket-sized devices, the services of the Internet, including email and the web, may be available. Service providers may restrict the services offered and mobile data charges may be significantly higher than other access methods.

Educational material at all levels from pre-school to post-doctoral is available from websites. Examples range from CBeebies, through school and high-school revision guides and virtual universities, to access to top-end scholarly literature through the likes of Google Scholar. For distance education, help with homework and other assignments, self-guided learning, whiling away spare time, or just looking up more detail on an interesting fact, it has never been easier for people to access educational information at any level from anywhere. The Internet in general and the World Wide Web in particular are important enablers of both formal and informal education. Further, the Internet allows universities, in particular, researchers from the social and behavioral sciences, to conduct research remotely via virtual laboratories, with profound changes in reach and generalizability of findings as well as in communication between scientists and in the publication of results.^[85]

The low cost and nearly instantaneous sharing of ideas, knowledge, and skills have made collaborative work dramatically easier, with the help of collaborative software. Not only can a group cheaply communicate and share ideas but the wide reach of the Internet allows such groups more easily to form. An example of this is the free software movement, which has produced, among other things, Linux, Mozilla Firefox, and OpenOffice.org. Internet chat, whether using an IRC chat room, an instant messaging system, or a social networking website, allows colleagues to stay in touch in a very convenient way while working at their computers during the day. Messages can be exchanged even more quickly and conveniently than via email. These systems may allow files to be exchanged, drawings and images to be shared, or voice and video contact between team members.

Content management systems allow collaborating teams to work on shared sets of documents simultaneously without accidentally destroying each other's work. Business and project teams can share calendars as well as documents and other information. Such collaboration occurs in a wide variety of areas including scientific research, software development, conference planning, political activism and creative writing. Social and political collaboration is also becoming more widespread as both Internet access and computer literacy spread.

The Internet allows computer users to remotely access other computers and information stores easily from any access point. Access may be with computer security, i.e. authentication and encryption technologies, depending on the requirements. This is encouraging new ways of working from home, collaboration and information sharing in many industries. An accountant sitting at home can audit the books of a company based in another country, on a server situated in a third country that is remotely maintained by IT specialists in a fourth. These accounts could have been created by home-working bookkeepers, in other remote locations, based on information emailed to them from offices all over the world. Some of these things were possible before the widespread use of the Internet, but the cost of private leased lines would have made many of them infeasible in practice. An office worker away from their desk, perhaps on the other side of the world on a business trip or a holiday, can access their emails, access their data using cloud computing, or open a remote desktop session into their office PC using a secure virtual private network (VPN) connection on the Internet. This can give the worker complete access to all of their normal files and data, including email and other applications, while away from the office. It has been referred to among system administrators as the Virtual Private Nightmare,^[86] because it extends the secure perimeter of a corporate network into remote locations and its employees' homes.

Social networking and entertainment

Many people use the World Wide Web to access news, weather and sports reports, to plan and book vacations and to pursue their personal interests. People use chat, messaging and email to make and stay in touch with friends worldwide, sometimes in the same way as some previously had pen pals.

Social networking websites such as Facebook, Twitter, and Myspace have created new ways to socialize and interact. Users of these sites are able to add a wide variety of information to pages, to pursue common interests, and to connect with others. It is also possible to find existing acquaintances, to allow communication among existing groups of people. Sites like LinkedIn foster commercial and business connections. YouTube and Flickr specialize in users' videos and photographs.

While social networking sites were initially for individuals only, today they are widely used by businesses and other organizations to promote their brands, to market to their customers and to encourage posts to "go viral". "Black hat" social media techniques are also employed by some organizations, such as spam accounts and astroturfing.

A risk for both individuals and organizations writing posts (especially public posts) on social networking websites, is that especially foolish or controversial posts occasionally lead to an unexpected and possibly large-scale backlash on social media from other Internet users. This is also a risk in relation to controversial offline behavior, if it is widely made known. The nature of this backlash can range widely from counter-arguments and public mockery, through insults and hate speech, to, in extreme cases, rape and death threats. The online disinhibition effect describes the tendency of many individuals to behave more stridently or offensively online than they would in person. A significant number of feminist women have been the target of various forms of harassment in response to posts they have made on social media, and Twitter in particular has been criticised in the past for not doing enough to aid victims of online abuse.^[87]

For organizations, such a backlash can cause overall brand damage, especially if reported by the media. However, this is not always the case, as any brand damage in the eyes of people with an opposing opinion to that presented by the organization could sometimes be outweighed by strengthening the brand in the eyes of others. Furthermore, if an organization or individual gives in to demands that others perceive as wrong-headed, that can then provoke a counter-backlash.

Some websites, such as Reddit, have rules forbidding the posting of personal information of individuals (also known as doxxing), due to concerns about such postings leading to mobs of large numbers of Internet users directing harassment at the specific individuals thereby identified. In particular, the Reddit rule forbidding the posting of personal information is widely understood to imply that all identifying photos and names must be censored in Facebook screenshots posted to Reddit. However, the interpretation of this rule in relation to public Twitter posts is less clear, and in any case, like-minded people online have many other ways they can use to direct each other's attention to public social media posts they disagree with.

Children also face dangers online such as cyberbullying and approaches by sexual predators, who sometimes pose as children themselves. Children may also encounter material which they may find upsetting, or material which their parents consider to be not age-appropriate. Due to naivety, they may also post personal information about themselves online, which could put them or their families at risk unless warned not to do so. Many parents choose to enable Internet filtering, and/or supervise their children's online activities, in an attempt to protect their children from inappropriate material on the Internet. The most popular social networking websites, such as Facebook and Twitter, commonly forbid users under the age of 13. However, these policies are typically trivial to circumvent by registering an account with a false birth date, and a significant number of children aged under 13 join such sites anyway. Social networking sites for younger children, which claim to provide better levels of protection for children, also exist.^[88]

The Internet has been a major outlet for leisure activity since its inception, with entertaining social experiments such as MUDs and MOOs being conducted on university servers, and humor-related Usenet groups receiving much traffic. Today, many Internet forums have sections devoted to games and funny videos. Over 6 million people use blogs or message boards as a means of communication and for the sharing of ideas. The Internet pornography and online gambling industries have taken advantage of the World Wide Web, and often provide a significant source of advertising revenue for other websites.^[89] Although many governments have attempted to restrict both industries' use of the Internet, in general, this has failed to stop their widespread popularity.^[90]

Another area of leisure activity on the Internet is multiplayer gaming.^[91] This form of recreation creates communities, where people of all ages and origins enjoy the fast-paced world of multiplayer games. These range from MMORPG to first-person shooters, from role-playing video games to online gambling. While online gaming has been around since the 1970s, modern modes of online gaming began with subscription services such as GameSpy and MPlayer.^[92] Non-subscribers were limited to certain types of game play or certain games. Many people use the Internet to access and download music, movies and other works for their enjoyment and relaxation. Free and fee-based services exist for all of these activities, using centralized servers and distributed peer-to-peer technologies. Some of these sources exercise more care with respect to the original artists' copyrights than others.

Internet usage has been correlated to users' loneliness.^[93] Lonely people tend to use the Internet as an outlet for their feelings and to share their stories with others, such as in the "I am lonely will anyone speak to me" thread.

Cybersectarianism is a new organizational form which involves: "highly dispersed small groups of practitioners that may remain largely anonymous within the larger social context and operate in relative secrecy, while still linked remotely to a larger network of believers who share a set of practices and texts, and often a common devotion to a particular leader. Overseas supporters provide funding and support; domestic practitioners distribute tracts, participate in acts of resistance, and share information on the internal situation with outsiders. Collectively, members and practitioners of such sects construct viable virtual communities of faith, exchanging personal testimonies and engaging in the collective study via email, on-line chat rooms, and web-based message boards."^[94] In particular, the British government has raised concerns about the prospect of young British Muslims being indoctrinated into Islamic extremism by material on the Internet, being persuaded to join terrorist groups such as the so-called "Islamic State", and then potentially committing acts of terrorism on returning to Britain after fighting in Syria or Iraq.

Cyberslacking can become a drain on corporate resources; the average UK employee spent 57 minutes a day surfing the Web while at work, according to a 2003 study by Peninsula Business Services.^[95] Internet addiction disorder is excessive computer use that interferes with daily life. Psychologist, Nicolas Carr believe that Internet use has other effects on individuals, for instance improving skills of scan-reading and interfering with the deep thinking that leads to true creativity.^[96]

Electronic business

Electronic business (e-business) encompasses business processes spanning the entire value chain: purchasing, supply chain management, marketing, sales, customer service, and business relationship. E-commerce seeks to add revenue streams using the Internet to build and enhance relationships with clients and partners.

According to International Data Corporation, the size of worldwide e-commerce, when global business-to-business and -consumer transactions are combined, equate to $16 trillion for 2013. A report by Oxford Economics adds those two together to estimate the total size of the digital economy at $20.4 trillion, equivalent to roughly 13.8% of global sales.^[97]

While much has been written of the economic advantages of Internet-enabled commerce, there is also evidence that some aspects of the Internet such as maps and location-aware services may serve to reinforce economic inequality and the digital divide.^[98] Electronic commerce may be responsible for consolidation and the decline of mom-and-pop, brick and mortar businesses resulting in increases in income inequality.^[99]^[100]^[101]

Author Andrew Keen, a long-time critic of the social transformations caused by the Internet, has recently focused on the economic effects of consolidation from Internet businesses. Keen cites a 2013 Institute for Local Self-Reliance report saying brick-and-mortar retailers employ 47 people for every $10 million in sales while Amazon employs only 14. Similarly, the 700-employee room rental start-up Airbnb was valued at $10 billion in 2014, about half as much as Hilton Hotels, which employs 152,000 people. And car-sharing Internet startup Uber employs 1,000 full-time employees and is valued at $18.2 billion, about the same valuation as Avis and Hertz combined, which together employ almost 60,000 people.^[102]

Telecommuting

Telecommuting is the performance within a traditional worker and employer relationship when it is facilitated by tools such as groupware, virtual private networks, conference calling, videoconferencing, and voice over IP (VOIP) so that work may be performed from any location, most conveniently the worker's home. It can be efficient and useful for companies as it allows workers to communicate over long distances, saving significant amounts of travel time and cost. As broadband Internet connections become commonplace, more workers have adequate bandwidth at home to use these tools to link their home to their corporate intranet and internal communication networks.

Crowdsourcing

The Internet provides a particularly good venue for crowdsourcing, because individuals tend to be more open in web-based projects where they are not being physically judged or scrutinized and thus can feel more comfortable sharing.^{[citation needed]}

Collaborative publishing

Wikis have also been used in the academic community for sharing and dissemination of information across institutional and international boundaries.^[103] In those settings, they have been found useful for collaboration on grant writing, strategic planning, departmental documentation, and committee work.^[104] The United States Patent and Trademark Office uses a wiki to allow the public to collaborate on finding prior art relevant to examination of pending patent applications. Queens, New York has used a wiki to allow citizens to collaborate on the design and planning of a local park.^[105]

The English Wikipedia has the largest user base among wikis on the World Wide Web^[106] and ranks in the top 10 among all Web sites in terms of traffic.^[107]

Politics and political revolutions

Banner in Bangkok during the 2014 Thai coup d'état, informing the Thai public that 'like' or 'share' activities on social media could result in imprisonment (observed June 30, 2014).

The Internet has achieved new relevance as a political tool. The presidential campaign of Howard Dean in 2004 in the United States was notable for its success in soliciting donation via the Internet. Many political groups use the Internet to achieve a new method of organizing for carrying out their mission, having given rise to Internet activism, most notably practiced by rebels in the Arab Spring.^[108]^[109]

The New York Times suggested that social media websites, such as Facebook and Twitter, helped people organize the political revolutions in Egypt, by helping activists organize protests, communicate grievances, and disseminate information.^[110]

The potential of the Internet as a civic tool of communicative power was explored by Simon R. B. Berdal in his 2004 thesis:

As the globally evolving Internet provides ever new access points to virtual discourse forums, it also promotes new civic relations and associations within which communicative power may flow and accumulate. Thus, traditionally … national-embedded peripheries get entangled into greater, international peripheries, with stronger combined powers... The Internet, as a consequence, changes the topology of the "centre-periphery" model, by stimulating conventional peripheries to interlink into "super-periphery" structures, which enclose and "besiege" several centres at once.^[111]

Berdal, therefore, extends the Habermasian notion of the Public sphere to the Internet, and underlines the inherent global and civic nature that interwoven Internet technologies provide. To limit the growing civic potential of the Internet, Berdal also notes how "self-protective measures" are put in place by those threatened by it:

If we consider China’s attempts to filter "unsuitable material" from the Internet, most of us would agree that this resembles a self-protective measure by the system against the growing civic potentials of the Internet. Nevertheless, both types represent limitations to "peripheral capacities". Thus, the Chinese government tries to prevent communicative power to build up and unleash (as the 1989 Tiananmen Square uprising suggests, the government may find it wise to install "upstream measures"). Even though limited, the Internet is proving to be an empowering tool also to the Chinese periphery: Analysts believe that Internet petitions have influenced policy implementation in favour of the public’s online-articulated will …^[111]

Incidents of politically motivated Internet censorship have now been recorded in many countries, including western democracies.

Philanthropy

The spread of low-cost Internet access in developing countries has opened up new possibilities for peer-to-peer charities, which allow individuals to contribute small amounts to charitable projects for other individuals. Websites, such as DonorsChoose and GlobalGiving, allow small-scale donors to direct funds to individual projects of their choice.

A popular twist on Internet-based philanthropy is the use of peer-to-peer lending for charitable purposes. Kiva pioneered this concept in 2005, offering the first web-based service to publish individual loan profiles for funding. Kiva raises funds for local intermediary microfinance organizations which post stories and updates on behalf of the borrowers. Lenders can contribute as little as $25 to loans of their choice, and receive their money back as borrowers repay. Kiva falls short of being a pure peer-to-peer charity, in that loans are disbursed before being funded by lenders and borrowers do not communicate with lenders themselves.^[112]^[113]

However, the recent spread of low-cost Internet access in developing countries has made genuine international person-to-person philanthropy increasingly feasible. In 2009, the US-based nonprofit Zidisha tapped into this trend to offer the first person-to-person microfinance platform to link lenders and borrowers across international borders without intermediaries. Members can fund loans for as little as a dollar, which the borrowers then use to develop business activities that improve their families' incomes while repaying loans to the members with interest. Borrowers access the Internet via public cybercafes, donated laptops in village schools, and even smart phones, then create their own profile pages through which they share photos and information about themselves and their businesses. As they repay their loans, borrowers continue to share updates and dialogue with lenders via their profile pages. This direct web-based connection allows members themselves to take on many of the communication and recording tasks traditionally performed by local organizations, bypassing geographic barriers and dramatically reducing the cost of microfinance services to the entrepreneurs.^[114]

Security

Internet resources, hardware, and software components are the target of malicious attempts to gain unauthorized control to cause interruptions or access private information. Such attempts include computer viruses which copy with the help of humans, computer worms which copy themselves automatically, denial of service attacks, ransomware, botnets, and spyware that reports on the activity and typing of users. Usually, these activities constitute cybercrime. Defense theorists have also speculated about the possibilities of cyber warfare using similar methods on a large scale.^{[citation needed]}

Surveillance

The vast majority of computer surveillance involves the monitoring of data and traffic on the Internet.^[115] In the United States for example, under the Communications Assistance For Law Enforcement Act, all phone calls and broadband Internet traffic (emails, web traffic, instant messaging, etc.) are required to be available for unimpeded real-time monitoring by Federal law enforcement agencies.^[116]^[117]^[118]

Packet capture is the monitoring of data traffic on a computer network. Computers communicate over the Internet by breaking up messages (emails, images, videos, web pages, files, etc.) into small chunks called "packets", which are routed through a network of computers, until they reach their destination, where they are assembled back into a complete "message" again. Packet Capture Appliance intercepts these packets as they are traveling through the network, in order to examine their contents using other programs. A packet capture is an information gathering tool, but not an analysis tool. That is it gathers "messages" but it does not analyze them and figure out what they mean. Other programs are needed to perform traffic analysis and sift through intercepted data looking for important/useful information. Under the Communications Assistance For Law Enforcement Act all U.S. telecommunications providers are required to install packet sniffing technology to allow Federal law enforcement and intelligence agencies to intercept all of their customers' broadband Internet and voice over Internet protocol (VoIP) traffic.^[119]

The large amount of data gathered from packet capturing requires surveillance software that filters and reports relevant information, such as the use of certain words or phrases, the access of certain types of web sites, or communicating via email or chat with certain parties.^[120] Agencies, such as the Information Awareness Office, NSA, GCHQ and the FBI, spend billions of dollars per year to develop, purchase, implement, and operate systems for interception and analysis of data.^[121]

Similar systems are operated by Iranian secret police to identify and suppress dissidents. The required hardware and software was allegedly installed by German Siemens AG and Finnish Nokia.^[122]

Censorship

Internet censorship and surveillance by country^[123]^[124]^[125]^[126]

  Pervasive

  Substantial

  Selective

  Changing situation

  Little or none

  Not classified or no data

Some governments, such as those of Burma, Iran, North Korea, the Mainland China, Saudi Arabia and the United Arab Emirates restrict access to content on the Internet within their territories, especially to political and religious content, with domain name and keyword filters.^[127]

In Norway, Denmark, Finland, and Sweden, major Internet service providers have voluntarily agreed to restrict access to sites listed by authorities. While this list of forbidden resources is supposed to contain only known child pornography sites, the content of the list is secret.^[128] Many countries, including the United States, have enacted laws against the possession or distribution of certain material, such as child pornography, via the Internet, but do not mandate filter software. Many free or commercially available software programs, called content-control software are available to users to block offensive websites on individual computers or networks, in order to limit access by children to pornographic material or depiction of violence.

Performance

As the Internet is a heterogeneous network, the physical characteristics, including for example the data transfer rates of connections, vary widely. It exhibits emergent phenomena that depend on its large-scale organization.^{[citation needed]}

Outages

An Internet blackout or outage can be caused by local signalling interruptions. Disruptions of submarine communications cables may cause blackouts or slowdowns to large areas, such as in the 2008 submarine cable disruption. Less-developed countries are more vulnerable due to a small number of high-capacity links. Land cables are also vulnerable, as in 2011 when a woman digging for scrap metal severed most connectivity for the nation of Armenia.^[129] Internet blackouts affecting almost entire countries can be achieved by governments as a form of Internet censorship, as in the blockage of the Internet in Egypt, whereby approximately 93%^[130] of networks were without access in 2011 in an attempt to stop mobilization for anti-government protests.^[131]

Energy use

In 2011, researchers estimated the energy used by the Internet to be between 170 and 307 GW, less than two percent of the energy used by humanity. This estimate included the energy needed to build, operate, and periodically replace the estimated 750 million laptops, a billion smart phones and 100 million servers worldwide as well as the energy that routers, cell towers, optical switches, Wi-Fi transmitters and cloud storage devices use when transmitting Internet traffic.^[132]^[133]

References

^ "IPTO -- Information Processing Techniques Office", The Living Internet, Bill Stewart (ed), January 2000.
^ "Internet History -- One Page Summary", The Living Internet, Bill Stewart (ed), January 2000.
^ "So, who really did invent the Internet?", Ian Peter, The Internet History Project, 2004. Retrieved 27 June 2014.
^ Wilson, David Stokes, Nicholas (2006). Small business management and entrepreneurship. London: Thomson Learning. p. 107. ISBN 9781844802241. However, users of the Internet were restricted largely to researchers and academics until the development of the World Wide Web by Tim Berners-Lee in 1989.
^ "The Open Market Internet Index". Treese.org. 1995-11-11. Retrieved 2013-06-15.
^ "World Stats". Internet World Stats. Miniwatts Marketing Group. 30 June 2012.
^ "Who owns the Internet?", Jonathan Strickland, How Stuff Works. Retrieved 27 June 2014.
^ "The Tao of IETF: A Novice's Guide to Internet Engineering Task Force", P. Hoffman and S. Harris, RFC 4677, September 2006.
^ The Chicago Manual of Style, 16th Edition: "capitalize World Wide Web and Internet"
^ "7.76 Terms like 'web' and 'Internet'", Chicago Manual of Style, University of Chicago, 16th edition (registration required)
^ "internetted". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.) nineteenth-century use as an adjective.
^ "internetwork". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
^ "HTML 4.01 Specification". HTML 4.01 Specification. World Wide Web Consortium. Retrieved August 13, 2008. [T]he link (or hyperlink, or Web link) [is] the basic hypertext construct. A link is a connection from one Web resource to another. Although a simple concept, the link has been one of the primary forces driving the success of the Web.
^ "The Difference Between the Internet and the World Wide Web". Webopedia.com. QuinStreet Inc. 2010-06-24. Retrieved 2014-05-01.
^ "Brief History of the Internet". Internet Society. Retrieved 9 April 2016. It happened that the work at MIT (1961-1967), at RAND (1962-1965), and at NPL (1964-1967) had all proceeded in parallel without any of the researchers knowing about the other work. The word "packet" was adopted from the work at NPL
^ Ward, Mark (29 October 2009). "Celebrating 40 years of the net". BBC News.
^ "A Technical History of CYCLADES". Technical Histories of the Internet & other Network Protocols (Computer Science Department, University of Texas Austin). 11 June 2002. Archived from the original on 1 September 2013.
^ Zimmermann, H. (August 1977). "The Cyclades Experience: Results and Impacts". Proc. IFIP'77 Congress (Toronto): 465–469.
^ A Chronicle of Merit's Early History, John Mulcahy, 1989, Merit Network, Ann Arbor, Michigan
^ Kim, Byung-Keun (2005). Internationalising the Internet the Co-evolution of Influence and Technology. Edward Elgar. pp. 51–55. ISBN 1845426754.
^ "Brief History of the Internet: The Initial Internetting Concepts", Barry M. Leiner, et al., Internet Society, Retrieved 27 June 2014.
^ "Roads and Crossroads of Internet History" by Gregory Gromov. 1995
^ Hafner, Katie (1998). Where Wizards Stay Up Late: The Origins Of The Internet. Simon & Schuster. ISBN 0-684-83267-4.
^ Ronda Hauben (2001). "From the ARPANET to the Internet". Retrieved 28 May 2009.
^ "Events in British Telecomms History". Events in British TelecommsHistory. Archived from the original on 5 April 2003. Retrieved 25 November 2005.
^ "NORSAR and the Internet". NORSAR. Archived from the original on 2012-12-17.
^ "#3 1982: the ARPANET community grows" in 40 maps that explain the internet, Timothy B. Lee, Vox Conversations, 2 June 2014. Retrieved 27 June 2014.
^ Kirstein, Peter T. "Early experiences with the ARPANET and Internet in the UK". Department of Computer Science, Systems and Networks Research Group, University College London. Retrieved 13 April 2016 ; Cade Metz (25 December 2012). "How the Queen of England Beat Everyone to the Internet". Wired Magazine. Retrieved 27 June 2014.
^ Leiner, Barry M.; Cerf, Vinton G.; Clark, David D.; Kahn, Robert E.; Kleinrock, Leonard; Lynch, Daniel C.; Postel, Jon; Roberts, Larry G.; Wolff, Stephen (2003). "A Brief History of Internet": 1011. arXiv:cs/9901011. Bibcode:1999cs........1011L. Retrieved 28 May 2009.
^ NSFNET: A Partnership for High-Speed Networking, Final Report 1987–1995, Karen D. Frazer, Merit Network, Inc., 1995
^ Harris, Susan R.; Gerich, Elise (April 1996). "Retiring the NSFNET Backbone Service: Chronicling the End of an Era". ConneXions 10 (4).
^ Ben Segal (1995). "A Short History of Internet Protocols at CERN".
^ Réseaux IP Européens (RIPE)
^ "Internet History in Asia". 16th APAN Meetings/Advanced Network Conference in Busan. Retrieved 25 December 2005.
^ The History of NORDUnet
^ ftp://ftp.cuhk.edu.hk/pub/doc/internet/Internet.Monthly.Report/imr9002.txt
^ Berners-Lee, Tim. "The Original HTTP as defined in 1991". W3C.org.
^ How the web went world wide, Mark Ward, Technology Correspondent, BBC News. Retrieved 24 January 2011
^ "Total Midyear Population for the World: 1950-2050", International Programs Center for Demographic and Economic Studies, U.S. Census Bureau. Retrieved 24 May 2014.
^ ICT Facts and Figures 2005, 2010, 2014, Telecommunication Development Bureau, International Telecommunication Union (ITU). Retrieved 24 May 2015.
^ "Brazil, Russia, India and China to Lead Internet Growth Through 2011". Clickz.com. Archived from the original on 4 October 2008. Retrieved 28 May 2009.
^ Coffman, K. G; Odlyzko, A. M. (2 October 1998). "The size and growth rate of the Internet" (PDF). AT&T Labs. Retrieved 21 May 2007.
^ Comer, Douglas (2006). The Internet book. Prentice Hall. p. 64. ISBN 0-13-233553-0.
^ "World Internet Users and Population Stats". Internet World Stats. Miniwatts Marketing Group. 22 June 2011. Retrieved 23 June 2011.
^ Hilbert, Martin; López, Priscila (April 2011). "The World's Technological Capacity to Store, Communicate, and Compute Information" (PDF). Science 332 (6025): 60–65. Bibcode:2011Sci...332...60H. doi:10.1126/science.1200970. PMID 21310967.
^ Klein, Hans. (2004). "ICANN and Non-Territorial Sovereignty: Government Without the Nation State." Internet and Public Policy Project. Georgia Institute of Technology.
^ Packard, Ashley (2010). Digital Media Law. Wiley-Blackwell. p. 65. ISBN 978-1-4051-8169-3.
^ "Bush administration annexes internet", Kieren McCarthy, The Register, 1 July 2005
^ Mueller, Milton L. (2010). Networks and States: The Global Politics of Internet Governance. MIT Press. p. 61. ISBN 978-0-262-01459-5.
^ "Internet Society (ISOC) All About The Internet: History of the Internet". ISOC. Retrieved 2013-12-19.
^ A. L. Barab´asi, R. Albert; Barabási, Albert-László (2002). "Statistical mechanics of complex networks". Rev. Mod. Phys. 74: 47–94. arXiv:cond-mat/0106096. Bibcode:2002RvMP...74...47A. doi:10.1103/RevModPhys.74.47.
^ Pasternak, Sean B. (7 March 2006). "Toronto Hydro to Install Wireless Network in Downtown Toronto". Bloomberg. Retrieved 8 August 2011.
^ "By 2013, mobile phones will overtake PCs as the most common Web access device worldwide", according a forecast in "Gartner Highlights Key Predictions for IT Organizations and Users in 2010 and Beyond", Gartner, Inc., 13 January 2010
^ Willinger, Walter; Govindan, Ramesh; Jamin, Sugih; Paxson, Vern; Shenker, Scott (2002). "Scaling phenomena in the Internet: Critically examining criticality". Proceedings of the National Academy of Sciences 99 (99): 2573–2580. Bibcode:2002PNAS...99.2573W. doi:10.1073/pnas.012583099.
^ R. Cohen, K. Erez, D. ben-Avraham, S. Havlin; Erez, Keren; Ben-Avraham, Daniel; Havlin, Shlomo (2000). "Resilience of the Internet to random breakdowns". Phys. Rev. Lett 85 (21): 4625. arXiv:cond-mat/0007048. Bibcode:2000PhRvL..85.4626C. doi:10.1103/PhysRevLett.85.4626.
^ R. Cohen, K. Erez, D. ben-Avraham, S. Havlin; Erez, K; Ben-Avraham, D; Havlin, S (2001). "Breakdown of the Internet under intentional attack". Phys. Rev. Lett 86 (16): 3682–5. arXiv:cond-mat/0010251. Bibcode:2001PhRvL..86.3682C. doi:10.1103/PhysRevLett.86.3682. PMID 11328053.
^ Jesdanun, Anick (16 April 2007). "Internet Makeover? Some argue it's time". Seattletimes.nwsource.com. Retrieved 8 August 2011.
^ "IETF Home Page". Ietf.org. Retrieved 20 June 2009.
^ Huston, Geoff. "IPv4 Address Report, daily generated". Retrieved 20 May 2009.
^ "Notice of Internet Protocol version 4 (IPv4) Address Depletion" (PDF). Retrieved 7 August 2009.
^ "World Wide Web Timeline". Pews Research Center. 11 March 2014. Retrieved 1 August 2015.
^ "Website Analytics Tool". Retrieved 1 August 2015.
^ Morrison, Geoff (18 November 2010). "What to know before buying a 'connected' TV – Technology & science – Tech and gadgets – Tech Holiday Guide". MSNBC. Retrieved 8 August 2011.
^ "YouTube Fact Sheet". YouTube, LLC. Archived from the original on 4 July 2010. Retrieved 20 January 2009.
^ "Individuals using the Internet 2005 to 2014", Key ICT indicators for developed and developing countries and the world (totals and penetration rates), International Telecommunication Union (ITU). Retrieved 25 May 2015.
^ "Internet users per 100 inhabitants 1997 to 2007", ICT Data and Statistics (IDS), International Telecommunication Union (ITU). Retrieved 25 May 2015.
^ ^a ^b "Number of Internet Users by Language", Internet World Stats, Miniwatts Marketing Group, 31 May 2011. Retrieved 22 April 2012
^ "Usage of content languages for websites". W3Techs.com. Retrieved 26 April 2013.
^ Internet users graphs, Market Information and Statistics, International Telecommunications Union
^ "Google Earth demonstrates how technology benefits RI`s civil society, govt". Antara News. 2011-05-26. Retrieved 2012-11-19.
^ Steve Dent. "There are now 3 billion internet users, mostly in rich countries". Retrieved 25 November 2014.
^ World Internet Usage Statistics News and Population Stats updated for 30 June 2010. Retrieved 20 February 2011.
^ How men and women use the Internet Pew Research Center 28 December 2005
^ "Rapleaf Study on Social Network Users". Archived from the original on March 20, 2009.
^ "Women Ahead Of Men In Online Tv, Dvr, Games, And Social Media.". Entrepreneur.com. 1 May 2008. Retrieved 8 August 2011.
^ "Technorati's State of the Blogosphere". Technorati. Retrieved 8 August 2011.
^ "Special Report: The Telecom Consumer in 2020", Pavel Marceux, Euromonitor International, 27 August 2013. Retrieved 7 June 2015.
^ "Percentage of Individuals using the Internet 2000-2012", International Telecommunications Union (Geneva), June 2013, retrieved 22 June 2013
^ Seese, Michael. Scrappy Information Security. p. 130. ISBN 978-1-60005-132-6. Retrieved 5 June 2015.
^ netizen, Dictionary.com
^ The Net and Netizens by Michael Hauben, Columbia University.
^ A Brief History of the Internet from the Internet Society
^ "Oxford Dictionaries – internaut". oxforddictionaries.com. Retrieved 6 June 2015.
^ Mossberger, Karen. "Digital Citizenship – The Internet, Society and Participation" By Karen Mossberger, Caroline J. Tolbert, and Ramona S. McNeal." 23 Nov. 2011. ISBN 978-0-8194-5606-9
^ Reips, U.-D. (2008). How Internet-mediated research changes science. In A. Barak (Ed.), Psychological aspects of cyberspace: Theory, research, applications (pp. 268-294). Cambridge: Cambridge University Press. ISBN 978-0-521-69464-3. Retrieved 22 July 2014.
^ "The Virtual Private Nightmare: VPN". Librenix. 4 August 2004. Retrieved 21 July 2010.
^ Moore, Keith (27 July 2013). "Twitter 'report abuse' button calls after rape threats". BBC News. Retrieved 7 December 2014.
^ Kessler, Sarah (11 October 2010). "5 Fun and Safe Social Networks for Children". Mashable. Retrieved 7 December 2014.
^ "Internet Pornography Statistics", Jerry Ropelato, Top Ten Reviews, 2006
^ "Do It Yourself! Amateur Porn Stars Make Bank", Russell Goldman, ABC News, 22 January 2008
^ "Top Online Game Trends of the Decade", Dave Spohn, About.com, 15 December 2009
^ "Internet Game Timeline: 1963 – 2004", Dave Spohn, About.com, 2 June 2011
^ Carole Hughes, Boston College. "The Relationship Between Internet Use and Loneliness Among College Students". Boston College. Retrieved 11 August 2011.
^ Patricia M. Thornton, "The New Cybersects: Resistance and Repression in the Reform era. " In Elizabeth Perry and Mark Selden, eds., Chinese Society: Change, Conflict and Resistance (second edition) (London and New York: Routledge, 2003), pp. 149–50.
^ "Net abuse hits small city firms". The Scotsman (Edinburgh). 11 September 2003. Retrieved 7 August 2009.
^ The Shallows: What the Internet Is Doing to Our Brains, Nicholas Carr, W. W. Norton, 7 June 2010, 276 pp., ISBN 0-393-07222-3, ISBN 978-0-393-07222-8
^ "The New Digital Economy: How it will transform business", Oxford Economics, 2 July 2011
^ Badger, Emily (6 February 2013). "How the Internet Reinforces Inequality in the Real World". The Atlantic. Retrieved 2013-02-13.
^ "E-commerce will make the shopping mall a retail wasteland" ZDNet, 17 January 2013
^ "‘Free Shipping Day’ Promotion Spurs Late-Season Online Spending Surge, Improving Season-to-Date Growth Rate to 16 Percent vs. Year Ago" Comscore, 23 December 2012
^ "The Death of the American Shopping Mall" The Atlantic — Cities, 26 December 2012
^ Harris, Michael (January 2, 2015). "Book review: ‘The Internet Is Not the Answer’ by Andrew Keen". Washington Post. Retrieved 25 January 2015.
^ MM Wanderley, D Birnbaum, J Malloch (2006). New Interfaces For Musical Expression. IRCAM – Centre Pompidou. p. 180. ISBN 2-84426-314-3.
^ Nancy T. Lombardo (June 2008). "Putting Wikis to Work in Libraries" 27 (2). Medical Reference Services Quarterly: 129–145.
^ Noveck, Beth Simone (March 2007). "Wikipedia and the Future of Legal Education". Journal of Legal Education 57 (1). (subscription required)
^ "WikiStats by S23". S23Wiki. 3 April 2008. Retrieved 7 April 2007.
^ "Alexa Web Search – Top 500". Alexa Internet. Retrieved 2 March 2015.
^ "The Arab Uprising's Cascading Effects". Miller-mccune.com. 23 February 2011. Retrieved 27 February 2011.
^ The Role of the Internet in Democratic Transition: Case Study of the Arab Spring, Davit Chokoshvili, Master's Thesis, June 2011
^ Kirkpatrick, David D. (9 February 2011). "Wired and Shrewd, Young Egyptians Guide Revolt". The New York Times.
^ ^a ^b Berdal, S.R.B. (2004). "Public deliberation on the Web: A Habermasian inquiry into online discourse" (PDF). Oslo: University of Oslo.
^ Kiva Is Not Quite What It Seems, by David Roodman, Center for Global Development, 2 October 2009, as accessed 2 & 16 January 2010
^ Strom, Stephanie (9 November 2009). "Confusion on Where Money Lent via Kiva Goes". The New York Times. p. 6.
^ ""Zidisha Set to "Expand" in Peer-to-Peer Microfinance"". Microfinance Focus. 7 February 2010. Archived from the original on 28 February 2010.
^ Diffie, Whitfield; Susan Landau (August 2008). "Internet Eavesdropping: A Brave New World of Wiretapping". Scientific American. Retrieved 2009-03-13.
^ "CALEA Archive -- Electronic Frontier Foundation". Electronic Frontier Foundation (website). Retrieved 2009-03-14.
^ "CALEA: The Perils of Wiretapping the Internet". Electronic Frontier Foundation (website). Retrieved 2009-03-14.
^ "CALEA: Frequently Asked Questions". Electronic Frontier Foundation (website). Retrieved 2009-03-14.
^ "American Council on Education vs. FCC, Decision, United States Court of Appeals for the District of Columbia Circuit" (PDF). 9 June 2006. Archived from the original (PDF) on 7 September 2012. Retrieved 8 September 2013.
^ Hill, Michael (11 October 2004). "Government funds chat room surveillance research". USA Today. Associated Press. Retrieved 2009-03-19.
^ McCullagh, Declan (30 January 2007). "FBI turns to broad new wiretap method". ZDNet News. Archived from the original on 7 April 2010. Retrieved 2009-03-13.
^ "First round in Internet war goes to Iranian intelligence", Debkafile, 28 June 2009. (subscription required)
^ OpenNet Initiative "Summarized global Internet filtering data spreadsheet", 8 November 2011 and "Country Profiles", the OpenNet Initiative is a collaborative partnership of the Citizen Lab at the Munk School of Global Affairs, University of Toronto; the Berkman Center for Internet & Society at Harvard University; and the SecDev Group, Ottawa
^ Due to legal concerns the OpenNet Initiative does not check for filtering of child pornography and because their classifications focus on technical filtering, they do not include other types of censorship.
^ "Internet Enemies", Enemies of the Internet 2014: Entities at the heart of censorship and surveillance, Reporters Without Borders (Paris), 11 March 2014. Retrieved 24 June 2014.
^ Internet Enemies, Reporters Without Borders (Paris), 12 March 2012
^ Access Controlled: The Shaping of Power, Rights, and Rule in Cyberspace, Ronald J. Deibert, John G. Palfrey, Rafal Rohozinski, and Jonathan Zittrain (eds), MIT Press, April 2010, ISBN 0-262-51435-4, ISBN 978-0-262-51435-4
^ "Finland censors anti-censorship site". The Register. 18 February 2008. Retrieved 19 February 2008.
^ "Georgian woman cuts off web access to whole of Armenia". The Guardian. 6 April 2011. Retrieved 11 April 2012.
^ Cowie, James. "Egypt Leaves the Internet". Renesys. Archived from the original on 28 January 2011. Retrieved 28 January 2011.
^ "Egypt severs internet connection amid growing unrest". BBC News. 28 January 2011.
^ "Internet responsible for 2 per cent of global energy usage", Jim Giles, New Scientist (Reed Business Information Ltd.), 26 October 2011.
^ "The Energy and Emergy of the Internet", Barath Raghavan (ICSI) and Justin Ma (UC Berkeley), in Proceedings of the 10th ACM Workshop on Hot Topics in Networks, 14–15 November 2011, Cambridge, MA, USA. ACM SIGCOMM. ISBN 978-1-4503-1059-8/11/11.

External links

Find more about Internet at Wikipedia's sister projects
	Definitions from Wiktionary
	Media from Commons
	News stories from Wikinews
	Quotations from Wikiquote
	Source texts from Wikisource
	Textbooks from Wikibooks
	Learning resources from Wikiversity

The Internet Society
Berkman Center for Internet and Society
European Commission Information Society
Living Internet, Internet history and related information, including information from many creators of the Internet
Ger Magazine, Mongolia's first online magazine, launched in 1998.

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. アナフィラキシー患者の長期マネージメント long term management of patients with anaphylaxis
2. グルコースおよびグリコーゲン代謝の遺伝性疾患の概要 overview of inherited disorders of glucose and glycogen metabolism
3. 漢方薬および栄養補助食品の概要 overview of herbal medicine and dietary supplements
4. ダウン症：マネージメント down syndrome management
5. 遺伝子検査 genetic testing

English Journal

An assessment of health-care students' attitudes toward patients with or at high risk for HIV: implications for education and cultural competency.

Jin H1, Earnshaw VA, Wickersham JA, Kamarulzaman A, Desai MM, John J, Altice FL.
AIDS care.AIDS Care.2014 Oct;26(10):1223-8. doi: 10.1080/09540121.2014.894616. Epub 2014 Mar 14.
Stigma perpetuated by health-care providers has been found to be a barrier to care for vulnerable populations, including HIV-infected, people who inject drugs (PWIDs), and men who have sex with men (MSM) in multiple clinical contexts and remains unexamined among professional health-care students in
PMID 24625279

Are patients willing to participate in surveys?

Hartel J1, Huang KE, Taheri A, Sandoval LF, Davis SA, Feldman SR, Huang WW.
The Journal of dermatological treatment.J Dermatolog Treat.2014 Oct;25(5):365-6. doi: 10.3109/09546634.2013.853953.
PMID 24171440

The Cancer Patient's Use and Appreciation of the Internet and Other Modern Means of Communication.

Katz JE1, Roberge D, Coulombe G.
Technology in cancer research & treatment.Technol Cancer Res Treat.2014 Oct;13(5):477-84. doi: 10.7785/tcrtexpress.2013.600267. Epub 2013 Aug 31.
As computers and smartphones continue to transform the doctor-patient relationship, it is essential that healthcare professionals understand how their patients wish to interact with these devices. The results from a satisfaction questionnaire of 225 Oncology patients treated in 2011 in Quebec, Canad
PMID 24000994

Japanese Journal

CRIC著作権シンポジウム2014「ネット×著作権」 : 日本の文化発信のための最適ルールとは

深澤一央
コピライト 54(643), 19-28, 2014-11
NAID 40020254621

大学図書館書籍アーカイブHathiTrust

時実象一
情報管理 57(8), 548-561, 2014-11
NAID 40020245398

Factors Affecting Project Performance of IS Development: Evidence from Japanese IT Vendors (Preprint)

Tomoyuki Kawamura,Kenichi Takano
情報処理学会論文誌 55(10), 2014-10-15
… We accomplish this by using an Internet-based questionnaire and statistical analysis. …
NAID 110009838406

Related Pictures

Will Wi-Fi Last? A Futuristic Look at Viable Alternatives | Kalahari Meetings Blog Internet earth loop: Royalty-free video and stock footage Internet bientôt confronté à ses limites physiques Internet of Things or Internet of Threats? | Radware Blog Internet Business Technology HD Wallpaper 07 Preview | 10wallpaper.com L’utilizzo di Internet in Italia nel 2017: l’analisi di comScore - BitMat eKapija | Serbia's .RS internet domain supports alphabets of 13 local languages Internet Backgrounds - Wallpaper Cave

★リンクテーブル★

リンク元	「World Wide Web」「インターネット」
関連記事	「intern」

「World Wide Web」

　　[★]

ワールドワイドウェブ、ウェブ、ウェッブ

関: internet、web、www

「インターネット」

　　[★]

英: internet
関: ウェブ

「intern」

　　[★]

n.

インターン、医学研修生

[1] アメリカ英語発音: [ˈintərˌnet]、イギリス英語発音: [ˈɪntənɛt]

[2] 「inter-state」が「州間高速道路」、「inter-national」が「国際」を意味するのと同様。インターネットの原型となったARPANETは、研究機関の間のネットワークであった。この意味を明示的に表す場合は「an internet」と呼ぶ場合もある。

[3] この意味を明示的に表す場合は「The Internet、The Net」と呼ぶ場合もある。

[4] "互联网络の意味-中国語辞書-Weblio日中中日辞典". （Weblio）. 2016年4月25日閲覧。

[5] Man-Computer Symbiosis 「人間とコンピュータの共生」 1960年3月

[6] インターネットが40周年最初に送られたメッセージは「LO」 - ITmedia News

[7] 40th Anniversary of the Internet / UCLA Spotlight

[8] インターネット歴史の一幕：JUNETの誕生 - JPNIC ニュースレターNo.29

[9] "BATTLE FOR THE SOUL OF THE INTERNET". TIME, 1994年7月25日。

[1] "IPTO -- Information Processing Techniques Office", The Living Internet, Bill Stewart (ed), January 2000.

[2] "Internet History -- One Page Summary", The Living Internet, Bill Stewart (ed), January 2000.

[3] "So, who really did invent the Internet?", Ian Peter, The Internet History Project, 2004. Retrieved 27 June 2014.

[4] Wilson, David Stokes, Nicholas (2006). Small business management and entrepreneurship. London: Thomson Learning. p. 107. ISBN 9781844802241. However, users of the Internet were restricted largely to researchers and academics until the development of the World Wide Web by Tim Berners-Lee in 1989.

[5] "The Open Market Internet Index". Treese.org. 1995-11-11. Retrieved 2013-06-15.

[stats-6] "World Stats". Internet World Stats. Miniwatts Marketing Group. 30 June 2012.

[7] "Who owns the Internet?", Jonathan Strickland, How Stuff Works. Retrieved 27 June 2014.

[8] "The Tao of IETF: A Novice's Guide to Internet Engineering Task Force", P. Hoffman and S. Harris, RFC 4677, September 2006.

[9] The Chicago Manual of Style, 16th Edition: "capitalize World Wide Web and Internet"

[10] "7.76 Terms like 'web' and 'Internet'", Chicago Manual of Style, University of Chicago, 16th edition (registration required)

[11] "internetted". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.) nineteenth-century use as an adjective.

[12] "internetwork". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)

[13] "HTML 4.01 Specification". HTML 4.01 Specification. World Wide Web Consortium. Retrieved August 13, 2008. [T]he link (or hyperlink, or Web link) [is] the basic hypertext construct. A link is a connection from one Web resource to another. Although a simple concept, the link has been one of the primary forces driving the success of the Web.

[14] "The Difference Between the Internet and the World Wide Web". Webopedia.com. QuinStreet Inc. 2010-06-24. Retrieved 2014-05-01.

[15] "Brief History of the Internet". Internet Society. Retrieved 9 April 2016. It happened that the work at MIT (1961-1967), at RAND (1962-1965), and at NPL (1964-1967) had all proceeded in parallel without any of the researchers knowing about the other work. The word "packet" was adopted from the work at NPL

[BBC_Technology-16] Ward, Mark (29 October 2009). "Celebrating 40 years of the net". BBC News.

[17] "A Technical History of CYCLADES". Technical Histories of the Internet & other Network Protocols (Computer Science Department, University of Texas Austin). 11 June 2002. Archived from the original on 1 September 2013.

[18] Zimmermann, H. (August 1977). "The Cyclades Experience: Results and Impacts". Proc. IFIP'77 Congress (Toronto): 465–469.

[19] A Chronicle of Merit's Early History, John Mulcahy, 1989, Merit Network, Ann Arbor, Michigan

[20] Kim, Byung-Keun (2005). Internationalising the Internet the Co-evolution of Influence and Technology. Edward Elgar. pp. 51–55. ISBN 1845426754.

[21] "Brief History of the Internet: The Initial Internetting Concepts", Barry M. Leiner, et al., Internet Society, Retrieved 27 June 2014.

[NetValley-22] "Roads and Crossroads of Internet History" by Gregory Gromov. 1995

[23] Hafner, Katie (1998). Where Wizards Stay Up Late: The Origins Of The Internet. Simon & Schuster. ISBN 0-684-83267-4.

[24] Ronda Hauben (2001). "From the ARPANET to the Internet". Retrieved 28 May 2009.

[25] "Events in British Telecomms History". Events in British TelecommsHistory. Archived from the original on 5 April 2003. Retrieved 25 November 2005.

[26] "NORSAR and the Internet". NORSAR. Archived from the original on 2012-12-17.

[27] "#3 1982: the ARPANET community grows" in 40 maps that explain the internet, Timothy B. Lee, Vox Conversations, 2 June 2014. Retrieved 27 June 2014.

[28] Kirstein, Peter T. "Early experiences with the ARPANET and Internet in the UK". Department of Computer Science, Systems and Networks Research Group, University College London. Retrieved 13 April 2016 ; Cade Metz (25 December 2012). "How the Queen of England Beat Everyone to the Internet". Wired Magazine. Retrieved 27 June 2014.

[29] Leiner, Barry M.; Cerf, Vinton G.; Clark, David D.; Kahn, Robert E.; Kleinrock, Leonard; Lynch, Daniel C.; Postel, Jon; Roberts, Larry G.; Wolff, Stephen (2003). "A Brief History of Internet": 1011. arXiv:cs/9901011. Bibcode:1999cs........1011L. Retrieved 28 May 2009.

[30] NSFNET: A Partnership for High-Speed Networking, Final Report 1987–1995, Karen D. Frazer, Merit Network, Inc., 1995

[ConneXions-April1996-31] Harris, Susan R.; Gerich, Elise (April 1996). "Retiring the NSFNET Backbone Service: Chronicling the End of an Era". ConneXions 10 (4).

[32] Ben Segal (1995). "A Short History of Internet Protocols at CERN".

[33] Réseaux IP Européens (RIPE)

[34] "Internet History in Asia". 16th APAN Meetings/Advanced Network Conference in Busan. Retrieved 25 December 2005.

[35] The History of NORDUnet

[36] tp://ftp.cuhk.edu.hk/pub/doc/internet/Internet.Monthly.Report/imr9002.txt

[37] Berners-Lee, Tim. "The Original HTTP as defined in 1991". W3C.org.

[38] How the web went world wide, Mark Ward, Technology Correspondent, BBC News. Retrieved 24 January 2011

[USCensus-WorldPop1950to2050-2014-39] "Total Midyear Population for the World: 1950-2050", International Programs Center for Demographic and Economic Studies, U.S. Census Bureau. Retrieved 24 May 2014.

[ITCFactsAndFigures-2014-40] ICT Facts and Figures 2005, 2010, 2014, Telecommunication Development Bureau, International Telecommunication Union (ITU). Retrieved 24 May 2015.

[41] "Brazil, Russia, India and China to Lead Internet Growth Through 2011". Clickz.com. Archived from the original on 4 October 2008. Retrieved 28 May 2009.

[42] Coffman, K. G; Odlyzko, A. M. (2 October 1998). "The size and growth rate of the Internet" (PDF). AT&T Labs. Retrieved 21 May 2007.

[43] Comer, Douglas (2006). The Internet book. Prentice Hall. p. 64. ISBN 0-13-233553-0.

[stats1-44] "World Internet Users and Population Stats". Internet World Stats. Miniwatts Marketing Group. 22 June 2011. Retrieved 23 June 2011.

[45] Hilbert, Martin; López, Priscila (April 2011). "The World's Technological Capacity to Store, Communicate, and Compute Information" (PDF). Science 332 (6025): 60–65. Bibcode:2011Sci...332...60H. doi:10.1126/science.1200970. PMID 21310967.

[46] Klein, Hans. (2004). "ICANN and Non-Territorial Sovereignty: Government Without the Nation State." Internet and Public Policy Project. Georgia Institute of Technology.

[47] Packard, Ashley (2010). Digital Media Law. Wiley-Blackwell. p. 65. ISBN 978-1-4051-8169-3.

[48] "Bush administration annexes internet", Kieren McCarthy, The Register, 1 July 2005

[49] Mueller, Milton L. (2010). Networks and States: The Global Politics of Internet Governance. MIT Press. p. 61. ISBN 978-0-262-01459-5.

[50] "Internet Society (ISOC) All About The Internet: History of the Internet". ISOC. Retrieved 2013-12-19.

[51] A. L. Barab´asi, R. Albert; Barabási, Albert-László (2002). "Statistical mechanics of complex networks". Rev. Mod. Phys. 74: 47–94. arXiv:cond-mat/0106096. Bibcode:2002RvMP...74...47A. doi:10.1103/RevModPhys.74.47.

[52] Pasternak, Sean B. (7 March 2006). "Toronto Hydro to Install Wireless Network in Downtown Toronto". Bloomberg. Retrieved 8 August 2011.

[53] "By 2013, mobile phones will overtake PCs as the most common Web access device worldwide", according a forecast in "Gartner Highlights Key Predictions for IT Organizations and Users in 2010 and Beyond", Gartner, Inc., 13 January 2010

[54] Willinger, Walter; Govindan, Ramesh; Jamin, Sugih; Paxson, Vern; Shenker, Scott (2002). "Scaling phenomena in the Internet: Critically examining criticality". Proceedings of the National Academy of Sciences 99 (99): 2573–2580. Bibcode:2002PNAS...99.2573W. doi:10.1073/pnas.012583099.

[55] R. Cohen, K. Erez, D. ben-Avraham, S. Havlin; Erez, Keren; Ben-Avraham, Daniel; Havlin, Shlomo (2000). "Resilience of the Internet to random breakdowns". Phys. Rev. Lett 85 (21): 4625. arXiv:cond-mat/0007048. Bibcode:2000PhRvL..85.4626C. doi:10.1103/PhysRevLett.85.4626.

[56] R. Cohen, K. Erez, D. ben-Avraham, S. Havlin; Erez, K; Ben-Avraham, D; Havlin, S (2001). "Breakdown of the Internet under intentional attack". Phys. Rev. Lett 86 (16): 3682–5. arXiv:cond-mat/0010251. Bibcode:2001PhRvL..86.3682C. doi:10.1103/PhysRevLett.86.3682. PMID 11328053.

[57] Jesdanun, Anick (16 April 2007). "Internet Makeover? Some argue it's time". Seattletimes.nwsource.com. Retrieved 8 August 2011.

[58] "IETF Home Page". Ietf.org. Retrieved 20 June 2009.

[59] Huston, Geoff. "IPv4 Address Report, daily generated". Retrieved 20 May 2009.

[60] "Notice of Internet Protocol version 4 (IPv4) Address Depletion" (PDF). Retrieved 7 August 2009.

[61] "World Wide Web Timeline". Pews Research Center. 11 March 2014. Retrieved 1 August 2015.

[62] "Website Analytics Tool". Retrieved 1 August 2015.

[63] Morrison, Geoff (18 November 2010). "What to know before buying a 'connected' TV – Technology & science – Tech and gadgets – Tech Holiday Guide". MSNBC. Retrieved 8 August 2011.

[64] "YouTube Fact Sheet". YouTube, LLC. Archived from the original on 4 July 2010. Retrieved 20 January 2009.

[65] "Individuals using the Internet 2005 to 2014", Key ICT indicators for developed and developing countries and the world (totals and penetration rates), International Telecommunication Union (ITU). Retrieved 25 May 2015.

[66] "Internet users per 100 inhabitants 1997 to 2007", ICT Data and Statistics (IDS), International Telecommunication Union (ITU). Retrieved 25 May 2015.

[NIUBL-IWS-67] "Number of Internet Users by Language", Internet World Stats, Miniwatts Marketing Group, 31 May 2011. Retrieved 22 April 2012

[UofCLBWApril2013-68] "Usage of content languages for websites". W3Techs.com. Retrieved 26 April 2013.

[69] Internet users graphs, Market Information and Statistics, International Telecommunications Union

[70] "Google Earth demonstrates how technology benefits RI`s civil society, govt". Antara News. 2011-05-26. Retrieved 2012-11-19.

[71] Steve Dent. "There are now 3 billion internet users, mostly in rich countries". Retrieved 25 November 2014.

[inetstats-72] World Internet Usage Statistics News and Population Stats updated for 30 June 2010. Retrieved 20 February 2011.

[73] How men and women use the Internet Pew Research Center 28 December 2005

[74] "Rapleaf Study on Social Network Users". Archived from the original on March 20, 2009.

[75] "Women Ahead Of Men In Online Tv, Dvr, Games, And Social Media.". Entrepreneur.com. 1 May 2008. Retrieved 8 August 2011.

[76] "Technorati's State of the Blogosphere". Technorati. Retrieved 8 August 2011.

[77] "Special Report: The Telecom Consumer in 2020", Pavel Marceux, Euromonitor International, 27 August 2013. Retrieved 7 June 2015.

[ITU-IndividualsUsingTheInternet-78] "Percentage of Individuals using the Internet 2000-2012", International Telecommunications Union (Geneva), June 2013, retrieved 22 June 2013

[79] Seese, Michael. Scrappy Information Security. p. 130. ISBN 978-1-60005-132-6. Retrieved 5 June 2015.

[80] netizen, Dictionary.com

[Hauben-81] The Net and Netizens by Michael Hauben, Columbia University.

[82] A Brief History of the Internet from the Internet Society

[83] "Oxford Dictionaries – internaut". oxforddictionaries.com. Retrieved 6 June 2015.

[84] Mossberger, Karen. "Digital Citizenship – The Internet, Society and Participation" By Karen Mossberger, Caroline J. Tolbert, and Ramona S. McNeal." 23 Nov. 2011. ISBN 978-0-8194-5606-9

[85] Reips, U.-D. (2008). How Internet-mediated research changes science. In A. Barak (Ed.), Psychological aspects of cyberspace: Theory, research, applications (pp. 268-294). Cambridge: Cambridge University Press. ISBN 978-0-521-69464-3. Retrieved 22 July 2014.

[86] "The Virtual Private Nightmare: VPN". Librenix. 4 August 2004. Retrieved 21 July 2010.

[87] Moore, Keith (27 July 2013). "Twitter 'report abuse' button calls after rape threats". BBC News. Retrieved 7 December 2014.

[88] Kessler, Sarah (11 October 2010). "5 Fun and Safe Social Networks for Children". Mashable. Retrieved 7 December 2014.

[89] "Internet Pornography Statistics", Jerry Ropelato, Top Ten Reviews, 2006

[90] "Do It Yourself! Amateur Porn Stars Make Bank", Russell Goldman, ABC News, 22 January 2008

[91] "Top Online Game Trends of the Decade", Dave Spohn, About.com, 15 December 2009

[92] "Internet Game Timeline: 1963 – 2004", Dave Spohn, About.com, 2 June 2011

[93] Carole Hughes, Boston College. "The Relationship Between Internet Use and Loneliness Among College Students". Boston College. Retrieved 11 August 2011.

[94] Patricia M. Thornton, "The New Cybersects: Resistance and Repression in the Reform era. " In Elizabeth Perry and Mark Selden, eds., Chinese Society: Change, Conflict and Resistance (second edition) (London and New York: Routledge, 2003), pp. 149–50.

[95] "Net abuse hits small city firms". The Scotsman (Edinburgh). 11 September 2003. Retrieved 7 August 2009.

[96] The Shallows: What the Internet Is Doing to Our Brains, Nicholas Carr, W. W. Norton, 7 June 2010, 276 pp., ISBN 0-393-07222-3, ISBN 978-0-393-07222-8

[97] "The New Digital Economy: How it will transform business", Oxford Economics, 2 July 2011

[98] Badger, Emily (6 February 2013). "How the Internet Reinforces Inequality in the Real World". The Atlantic. Retrieved 2013-02-13.

[99] "E-commerce will make the shopping mall a retail wasteland" ZDNet, 17 January 2013

[100] "‘Free Shipping Day’ Promotion Spurs Late-Season Online Spending Surge, Improving Season-to-Date Growth Rate to 16 Percent vs. Year Ago" Comscore, 23 December 2012

[101] "The Death of the American Shopping Mall" The Atlantic — Cities, 26 December 2012

[102] Harris, Michael (January 2, 2015). "Book review: ‘The Internet Is Not the Answer’ by Andrew Keen". Washington Post. Retrieved 25 January 2015.

[103] MM Wanderley, D Birnbaum, J Malloch (2006). New Interfaces For Musical Expression. IRCAM – Centre Pompidou. p. 180. ISBN 2-84426-314-3.

[104] Nancy T. Lombardo (June 2008). "Putting Wikis to Work in Libraries" 27 (2). Medical Reference Services Quarterly: 129–145.

[Noveck-105] Noveck, Beth Simone (March 2007). "Wikipedia and the Future of Legal Education". Journal of Legal Education 57 (1). (subscription required)

[106] "WikiStats by S23". S23Wiki. 3 April 2008. Retrieved 7 April 2007.

[107] "Alexa Web Search – Top 500". Alexa Internet. Retrieved 2 March 2015.

[cascading-108] "The Arab Uprising's Cascading Effects". Miller-mccune.com. 23 February 2011. Retrieved 27 February 2011.

[109] The Role of the Internet in Democratic Transition: Case Study of the Arab Spring, Davit Chokoshvili, Master's Thesis, June 2011

[110] Kirkpatrick, David D. (9 February 2011). "Wired and Shrewd, Young Egyptians Guide Revolt". The New York Times.

[simonBerdal2004-111] Berdal, S.R.B. (2004). "Public deliberation on the Web: A Habermasian inquiry into online discourse" (PDF). Oslo: University of Oslo.

[112] Kiva Is Not Quite What It Seems, by David Roodman, Center for Global Development, 2 October 2009, as accessed 2 & 16 January 2010

[113] Strom, Stephanie (9 November 2009). "Confusion on Where Money Lent via Kiva Goes". The New York Times. p. 6.

[114] ""Zidisha Set to "Expand" in Peer-to-Peer Microfinance"". Microfinance Focus. 7 February 2010. Archived from the original on 28 February 2010.

[sciam-internet-115] Diffie, Whitfield; Susan Landau (August 2008). "Internet Eavesdropping: A Brave New World of Wiretapping". Scientific American. Retrieved 2009-03-13.

[eff-calea-archive-116] "CALEA Archive -- Electronic Frontier Foundation". Electronic Frontier Foundation (website). Retrieved 2009-03-14.

[eff-calea-summary-117] "CALEA: The Perils of Wiretapping the Internet". Electronic Frontier Foundation (website). Retrieved 2009-03-14.

[eff-calea-faq-118] "CALEA: Frequently Asked Questions". Electronic Frontier Foundation (website). Retrieved 2009-03-14.

[119] "American Council on Education vs. FCC, Decision, United States Court of Appeals for the District of Columbia Circuit" (PDF). 9 June 2006. Archived from the original (PDF) on 7 September 2012. Retrieved 8 September 2013.

[usatoday-chatroom-120] Hill, Michael (11 October 2004). "Government funds chat room surveillance research". USA Today. Associated Press. Retrieved 2009-03-19.

[zdnet-fbi-121] McCullagh, Declan (30 January 2007). "FBI turns to broad new wiretap method". ZDNet News. Archived from the original on 7 April 2010. Retrieved 2009-03-13.

[122] "First round in Internet war goes to Iranian intelligence", Debkafile, 28 June 2009. (subscription required)

[ONISS-Nov2011-123] OpenNet Initiative "Summarized global Internet filtering data spreadsheet", 8 November 2011 and "Country Profiles", the OpenNet Initiative is a collaborative partnership of the Citizen Lab at the Munk School of Global Affairs, University of Toronto; the Berkman Center for Internet & Society at Harvard University; and the SecDev Group, Ottawa

[ONIChildPornLegal-124] Due to legal concerns the OpenNet Initiative does not check for filtering of child pornography and because their classifications focus on technical filtering, they do not include other types of censorship.

[RWBEnemies2014-125] "Internet Enemies", Enemies of the Internet 2014: Entities at the heart of censorship and surveillance, Reporters Without Borders (Paris), 11 March 2014. Retrieved 24 June 2014.

[RWBEnemies-126] Internet Enemies, Reporters Without Borders (Paris), 12 March 2012

[127] Access Controlled: The Shaping of Power, Rights, and Rule in Cyberspace, Ronald J. Deibert, John G. Palfrey, Rafal Rohozinski, and Jonathan Zittrain (eds), MIT Press, April 2010, ISBN 0-262-51435-4, ISBN 978-0-262-51435-4

[The_Register-128] "Finland censors anti-censorship site". The Register. 18 February 2008. Retrieved 19 February 2008.

[129] "Georgian woman cuts off web access to whole of Armenia". The Guardian. 6 April 2011. Retrieved 11 April 2012.

[renesys1-130] Cowie, James. "Egypt Leaves the Internet". Renesys. Archived from the original on 28 January 2011. Retrieved 28 January 2011.

[131] "Egypt severs internet connection amid growing unrest". BBC News. 28 January 2011.

[132] "Internet responsible for 2 per cent of global energy usage", Jim Giles, New Scientist (Reed Business Information Ltd.), 26 October 2011.

[133] "The Energy and Emergy of the Internet", Barath Raghavan (ICSI) and Justin Ma (UC Berkeley), in Proceedings of the 10th ACM Workshop on Hot Topics in Networks, 14–15 November 2011, Cambridge, MA, USA. ACM SIGCOMM. ISBN 978-1-4503-1059-8/11/11.

	2005	2010	2014^a
World population^[39]	6.5 billion	6.9 billion	7.2 billion
Not using the Internet	84%	70%	60%
Using the Internet	16%	30%	40%
Users in the developing world	8%	21%	32%
Users in the developed world	51%	67%	78%
^a Estimate. Source: International Telecommunications Union.^[40]

インターネット
Opte Projectによる、インターネットの一部を通したルーティングパスの視覚化
主要項目アクセス（英語版） - 検閲 - 民主主義情報格差 - デジタル権利（英語版）情報公開 - インターネットの歴史インターネット現象ネットワーク中立性先駆者（英語版） - プライバシー（英語版）社会学（英語版） - 使用率（英語版）
ガバナンス ICANN Internet Engineering Task Force インターネットガバナンスフォーラム（英語版）インターネット協会
情報基盤（英語版） Domain Name System Hypertext Transfer Protocol インターネットエクスチェンジ Internet Protocol インターネット・プロトコル・スイートインターネットサービスプロバイダ IPアドレス POP3 email protocol Simple Mail Transfer Protocol
サービスブログ（ミニブログ）- 電子メール - Fax ファイル共有 - ファイル転送（英語版）ゲーム - インスタントメッセージポッドキャスト - 電子商店街インターネットテレビ - VoIP World Wide Web（検索エンジン）
表話編歴

Internet protocol suite
Application layer
BGP DHCP DNS FTP HTTP IMAP LDAP MGCP NNTP NTP POP ONC/RPC RTP RTSP RIP SIP SMTP SNMP SSH Telnet TLS/SSL XMPP more...
Transport layer
TCP UDP DCCP SCTP RSVP more...
Internet layer
IP IPv4 IPv6 ICMP ICMPv6 ECN IGMP IPsec more...
Link layer
ARP NDP OSPF Tunnels L2TP PPP MAC Ethernet DSL ISDN FDDI more...
v t e

匿名

検索

案内

internet