StackOverflow - software development questions and answers
The concept behind Stack Overflow is that it is a focused arena where developers can help each other, with a digg-like voting scheme to try to bubble the good stuff to the surface. The homepage at Stack Overflow certainly reminds us of digg, but hopefully the level of discourse is not similar.
Stack Overflow has been criticized for solving a problem that does not exist, and for having a questionable reputation system. Developers looking for answers typically turn to Google, so why the need for a new site? I think Stack Overflow could turn into a bit of a nexus for developers looking for quick answers. A clearinghouse, maybe.
StackOverflow is currently in public beta.