In my so-called expert opinion, only communities focused around particular topics get enough traction to be useful. The "let's talk about everything!" solution

In my so-called expert opinion, only communities focused around particular topics get enough traction to be useful. The "let's talk about everything!" solution is just varying paths to the wide world of Yahoo Answers. That said, Quora could end up being a slightly better Yahoo Answers which is actually a net plus for the world, considering the sad and depressing state of Yahoo Answers.