Vivek is absolutely right about Quora's scaling chances. I made the same assessment back in October when I first started using it and their recent unveiling of

Vivek is absolutely right about Quora's scaling chances. I made the same assessment back in October when I first started using it and their recent unveiling of their future plans just confirmed it. Quora is niche, it picked a good niche to go after, but it's still niche. For a Q&A site to take over the market, it needs to be designed with scaling in mind from day 1, it's just that type of market. Thinking that social was the only missing ingredient was pretty naive, though it did advance the state of the art a bit. The last thing I will say is this, the real deal Q&A site won't have people questioning it's scaling potential, but rather why nobody figured it out before.