Encyclopedia article about the protocol, including origins and influences, terminology, and technical information.

Online encyclopedia article describes this Internet project's structure and history.

An article describing the history and growth of the directory and explaining its organization, maintenance, management, policies and procedures, and criticisms of it.

Offers a short overview and reference to the technology.

Article in the online collaborative encyclopedia, describing the history and mechanisms of Web search engines.

Encyclopaedia article about the search engine, including history and corporate information.

Encyclopedia article detailing Bing's history, features, and search options.

Encyclopedia article about Yahoo's search services, including features, history, and technology.

Encyclopedia article with background information, technical details, and the advantages and disadvantages of VoIP.

Encyclopedia article about the topic, including discussion of benefits, technology, guidelines, and legal provisions.