writes "Joel Spolsky has announced the beta release of Stack Overflow, intended to be a high-quality source of answers to software questions. Post a software question and watch the answers flow in. Popularity voting is very much woven into the site, where both questions and answers can be edited for clarity and voted up or down for correctness. Correctly posed questions and insightful answers float to the top. This site has reached critical mass."
From Joel's description, he was envisioning a source of technical Q&A about programming. So far, many of the questions are broader and less technical, such as advice on the best book about software development. It will be interesting to see where the community that's forming takes it.