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A microformat (sometimes abbreviated μF) is a World Wide Web-based approach to semantic markup which uses HTML/XHTML tags supported for other purposes to convey additional metadata and other attributes in web pages and other contexts that support (X)HTML, such as RSS. This approach allows software to process information intended for end-users (such as contact information, geographic coordinates, calendar events, and similar information) automatically. Although the content of web pages has been capable of some "automated processing" since the inception of the web, such processing is difficult because the markup tags used to display information on the web do not describe what the information means. Microformats can bridge this gap by attaching semantics, and thereby obviate other, more complicated, methods of automated processing, such as natural language processing or screen scraping. The use, adoption and processing of microformats enables data items to be indexed, searched for, saved or cross-referenced, so that information can be reused or combined.〔 microformats allow the encoding and extraction of event details, contact information, social relationships and similar information. Established microformats such as hCard are published on the web more than alternatives like schema (microdata) and RDFa. == Background == Microformats emerged around 2005〔The ''microformats'' is a community-standard maintained by its Wiki, and (the Wiki arrived ~2005 ). 〕 as part of a grassroots movement to make recognizable data items (such as events, contact details or geographical locations) capable of automated processing by software, as well as directly readable by end-users.〔〔In this context, the definition of "end-user" includes a person reading a web page on a computer screen or mobile device, or an assistive technology such as a screen reader.〕 Link-based microformats emerged first. These include vote links that express opinions of the linked page, which search engines can tally into instant polls.〔 〕 CommerceNet, a nonprofit organization that promotes e-commerce on the Internet, has helped sponsor and promote the technology and support the microformats community in various ways.〔 CommerceNet also helped co-found the Microformats.org community site.〔 Neither CommerceNet nor Microformats.org operates as a standards body. The microformats community functions through an open wiki, a mailing list, and an Internet relay chat (IRC) channel.〔 Most of the existing microformats originated at the Microformats.org wiki and the associated mailing list by a process of gathering examples of web-publishing behaviour, then codifying it. Some other microformats (such as rel=nofollow and unAPI) have been proposed, or developed, elsewhere. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Microformat」の詳細全文を読む スポンサード リンク
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