Quora

History
Quora was founded in 2009 by Adam D’Angelo and Charlie Cheever after working for Facebook. Cheever and D’Angelo noticed a lack of a good question and answer website online and used their background to produce Quora.

Audience
 This website is designed for anyone who wants to: share things that matter to them, have conversations with people with similar interests, find specific answers to questions and share things with the public.

Platform uses
 Quora is a platform where questions and answers are created, edited, organized and continually updated by users. Individuals are able to follow members who have similar interests, hobbies, etc. Users are given the option to rate answers on questions in order to clarify accuracy.

Number of users/other statistics
 In January 2011, Quora has reached 500,000 users.

In the news/interesting facts
 In September 2011 and 2012, Quora has released an app for the iPhone and Android. The following year they launched a blogging platform, full text search of questions and answers and introduced stats for users. Members are able to link their Twitter and Facebook to Quora for more interaction over various platforms.

Similar platforms
Similar platforms include: Ask.com, Yahoo! Answers, Mahalo, Jelly, Wikipedia