There's more to Q&A than just the consumer internet. There's the things people find on Yahoo Answers today, and then there's everything people want answers for,

There's more to Q&A than just the consumer internet. There's the things people find on Yahoo Answers today, and then there's everything people want answers for, whether Yahoo Answers has a category for it or not. The second is an order of magnitude larger than any site out there right now. You're absolutely right to focus on whether the user gets the right answer or not. They don't care about technology. My point is that there is a huge untapped market that can't be served by YA or SO, for technology reasons.