www.quora.com
Quora is a question-and-answer website created, edited and organized by its community of users.
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, co-founder Charlie Cheever announced that he was stepping back from a day-to-day role at the company, while continuing to retain an advisory role.
In January 2013, Quora launched a blogging platform.
Quora requires users to register with their real names rather than a screen name. Quora users may also link/ log-in with their Quora accounts with their Twitter and Facebook accounts. Quora users can upvote or downvote answers. They can also suggest edits to existing answers provided by other users. The Quora community includes some well-known people, such as Steve Case, Marc Andreesen, Dustin Moskovitz, Jimmy Wales, Justin Trudeau and Ashton Kutcher The largest group of Quora users is located in Silicon Valley, followed by New York City.
Quora uses Pylons and Comet for its backend and Ubuntu Linux as its operating system with MySQL as its database. It also uses Git and memcached. Quora uses Nginx as a reverse proxy server and HAProxy for load balancing.Quora has developed its own algorithm for ranking answers, which works similar to PageRank.Quora uses Amazon Elastic Compute Cloud technology to host the servers that run its website. In August 2011, Quora switched its infrastructure's Python implementation from CPython to PyPy, in order to improve response time.
By default, Quora exposes its users' profiles, including their personal names, to search engines.
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