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DMOZ (from ''directory.mozilla.org'', an earlier domain name) is a multilingual open-content directory of World Wide Web links. The site and community who maintain it are also known as the Open Directory Project (ODP). It is owned by AOL but constructed and maintained by a community of volunteer editors. DMOZ uses a hierarchical ontology scheme for organizing site listings. Listings on a similar topic are grouped into categories which can then include smaller categories. ==Project information== DMOZ was founded in the United States as Gnuhoo by Rich Skrenta and Bob Truel in 1998 while they were both working as engineers for Sun Microsystems. Chris Tolles, who worked at Sun Microsystems as the head of marketing for network security products, also signed on in 1998 as a co-founder of Gnuhoo along with co-founders Bryn Dole and Jeremy Wenokur. Skrenta had developed TASS, an ancestor of tin, the popular threaded Usenet newsreader for Unix systems. The original category structure of the Gnuhoo directory was based loosely on the structure of Usenet newsgroups then in existence. The Gnuhoo directory went live on June 5, 1998. After a ''Slashdot'' article suggested that Gnuhoo had nothing in common with the spirit of free software,〔(【引用サイトリンク】 accessdate = April 27, 2007 )〕 for which the GNU project was known, Richard Stallman and the Free Software Foundation objected to the use of (name ) "Gnu". So Gnuhoo was changed to NewHoo. Yahoo! then objected to the use of "Hoo" in the name, prompting them to switch the name again. ZURL was the likely choice.〔(Zurl Directory ), archived version of Topix.com blog entry dated May 29, 2004 by Skrenta, founder of the ODP.〕 However, before the switch to ZURL, NewHoo was acquired by Netscape Communications Corporation in October 1998 and became the Open Directory Project. Netscape released Open Directory data under the Open Directory License. Netscape was acquired by AOL shortly thereafter and DMOZ was one of the assets included in the acquisition. By the time Netscape assumed stewardship, the Open Directory Project had about 100,000 URLs indexed with contributions from about 4500 editors. On October 5, 1999, the number of URLs indexed by DMOZ reached one million. According to an unofficial estimate, the URLs in DMOZ numbered 1.6 million in April 2000, surpassing those in the Yahoo! Directory.〔(ODP and Yahoo Size Charts ) by ODP editor geniac〕 DMOZ achieved the milestones of indexing two million URLs on August 14, 2000, three million listings on November 18, 2001 and four million on December 3, 2003. As of April, 2013 there were 5,169,995 sites listed in over 1,017,500 categories. On October 31, 2015, there were 3,996,412 sites listed in 1,026,706 categories. From January 2006, DMOZ published online reports to inform the public about the development of the project. The first report covered the year 2005. Monthly reports were issued subsequently until September 2006.〔(ODP reports ) by ODP volunteer administrator chris2001〕 These reports gave greater insight into the functioning of the directory than the simplified statistics given on the front page of the directory. The number of listings and categories cited on the front page include "Test" and "Bookmarks" categories but these are not included in the RDF dump offered to users. The total number of editors who have contributed to the directory as of March 31, 2007 was 75,151.〔(ODP Front Page ). Retrieved August 15, 2006〕 There were about 7330 active editors during August 2006.〔 As of April 2013 there were 97,584 editors.〔(ODP Front Page ). Retrieved April 2013〕 ===System failure and editing outage, October to December 2006=== On October 20, 2006, DMOZ's main server suffered a catastrophic failure of the system〔("Dmoz's Catastrophic Server/Hardware Failure" ) October 27, 2006. Retrieved November 15, 2006.〕 that prevented editors from working on the directory until December 18, 2006. During that period, an older build of the directory was visible to the public. On January 13, 2007, the Site Suggestion and Update Listings forms were again made available.〔(dmoz.org technical problems ) at resource-zone.com (Retrieved January 13, 2007).〕 On January 26, 2007, weekly publication of RDF dumps resumed. To avoid future outages, the system now resides on a redundant configuration of two Intel-based servers.〔(''The Hamsters' New Home'' ), in: Open Directory newsletter issue Winter 2006. Retrieved December 26, 2006.〕 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「DMOZ」の詳細全文を読む スポンサード リンク
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