A question-and-answer website created, edited and organized by its community of users.

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, Formspring, Answerbag and Answers.com, and expert Q&A communities like the Stack Exchange.

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