Q&A sites are plenty, there are Yahoo! Answer, Answers.com, StackExchange sites etc. And Quora is a young site courageous enough to enter this crowded space. So far Quora has gained some buzz due to its social networking feature, and importantly the ability to attract real experts who are willing to spend time answering questions.
The users right now is heavily tech based, but this is slowly changing. It remains to be seen if Quora can continue to attract both quality questions and answers. The recently launched iPhone apps is a relieved for mobile users of the site as the app somehow simplify the usage of the site, a site that could be daunting if you’re a new user.