Check out <a href="http://www.quora.com/Anne-K.-Halsall/Quora-for-iPhone/Announcing-Quora-for-iPhone-and-iPod-touch" rel="nofollow">http://www.quora.com/Anne-K.-Halsall/Quora-for-iPhone/Announ...</a> and <a href="http://www.quora.com/about/app/" rel="nofollow">http://www.quora.com/about/app/</a> for some more specific information.
Perhaps this is not the right place to discuss this, but I have been surprised by the low general quality of answers (and questions) on Quora. At least in the topics I follow - philosophy, writing, clothes - the answers are often factually wrong, parochial or common opinion (rather than knowledge). There is no real criticism: instead of pointing out the obvious flaws, commenters usually just add that yes, they agree completely. My view only shows very few posts - a handful of questions per day. Despite all the hype, I have yet to find an informative and knowledgeable answer on any topic at all. Is the site the failure it seems to me or are there topics where the site actually has helped generate helpful content?