PR The big Quora question: What’s it good for? The question-and-answer site is getting a lot of buzz, but is it really useful? Commentators weigh in on what it is, and what it could be. By Matt WilsonJan. 14, 2011 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.