Provide a brief critique of other Q&A sites?

So far I like Fluther the best, but I’ve tried a couple of others and here’s what I have to say:

Fluther
+ Quality of answers, also quality of questions; site has personality
– Volume of questions low

Ask .com (new community Q&A website)
+ Good volume of questions, so more likely to find one you can answer
– Answers sometimes “thankless” (no lurve-like feature); no way to search questions and a bit disorganized (still in beta I believe though)

Yahoo Answers
+ Can get a very quick response
– Community too large, questions can easily get buried and forgotten due to the overly high volume. And why do you get minus points for asking a question?

Please post your critiques (any format you wish). Maybe you will tell me of a good site I haven’t heard of yet.