Quora /

Quora is a question-and-answer website created, edited and organized by its community of users. The site was founded in June 2009, launched in private beta in December 2009, and made available to the public on June 21, 2010. Quora aggregates questions and answers to topics and allows users to collaborate on them by editing questions and suggesting edits to other users' answers. Quora's main competitors are social bookmarking sites like reddit, social networking sites like ChaCha, Yahoo Answers, LinkedIn Answers, Formspring, Answerbag and Answers.com, and expert Q&A; communities like the Stack Exchange. Quora was co-founded by two former Facebook employees, Adam D'Angelo and Charlie Cheever. D'Angelo quit his position at Facebook in January 2010 to create Quora and said he was inspired to create Quora because he 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."