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Quora is a question-and-answer website where questions are asked, answered, edited and organized by its community of users. The company was founded in June 2009, and the website was made available to the public on June 21, 2010. Quora aggregates questions and answers to topics. Users can collaborate by editing questions and suggesting edits to other users' answers. ==History== Quora was co-founded by two former Facebook employees, Adam D'Angelo and Charlie Cheever. D'Angelo resigned from his position at Facebook in January 2010 to create Quora.〔(【引用サイトリンク】title=Why I Quit My CTO Job At Facebook And Started Quora )〕 He said that he and Cheever were inspired to create Quora because "we thought that Q & A is one of those areas on the internet where there are a lot of sites, but no one had come along and built something that was really good yet."〔(【引用サイトリンク】title=The Mystery Behind Quora )〕 Quora's base of users grew quickly in December 2010. Quora had an estimated 500,000 registered users, as of January 2011. In June 2011, Quora redesigned its website, in order to make information discovery and navigation easier. Some noted that the redesigned site had definite similarities to Wikipedia. Quora released an official iPhone app on September 29, 2011 and an official Android app on September 5, 2012. In September 2012, Quora announced that co-founder Charlie Cheever was stepping back from a day-to-day role at the company, while continuing to retain an advisory role.〔(【引用サイトリンク】What is Charlie Cheever's status at Quora as of September 11th, 2012? )〕 An article in ''Business Insider'' quoted an anonymous Quora answer, claimed to be written by an insider, that stated that Cheever left the company because he wanted to focus on the user experience, whereas D'Angelo wanted to focus on growth, and D'Angelo, by financing the Series B investment mostly from his own money, acquired sufficient control over the company to have things his way. In January 2013, Quora launched a blogging platform. Quora launched full text search of questions and answers on its website on March 20, 2013, and extended the feature to mobile devices in late May 2013. It also announced in May 2013 that all its metrics had tripled relative to the same time in the prior year. On November 12, 2013, Quora introduced a feature they called ''Stats'' that they billed as a dashboard for writers. This would allow all Quora users to see summary and detailed statistics regarding how many people had viewed, upvoted, followed, and shared their questions and answers. TechCrunch reported that, although Quora did not have any immediate plans for monetization, they believed that search ads would likely be their eventual source of monetization. In April 2014, it was announced that Quora was raising $80 million from Tiger Global at a reported $900 million valuation. Quora was also one of the members of the Summer 2014 Y Combinator batch. 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「Quora」の詳細全文を読む スポンサード リンク
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