It seems http://stackoverflow.com/ is finally out of private beta, check it out. It’s the programmer’s Q&A resource that’s had the massive pre-hyping from Joel Spolsky and Jeff Atwood over at IT conversations.
First impression: it seems really great, better than the hyping in fact. Also quite active – while I was trying to answer a question 4 more response came in, inline. Some great community karma-enabling ideas. Only problem is it’s really heavily .NET weighted at the moment, so head on over and give it some of your PHP/linux/open source expertise
UPDATE: There are some real classics like this: http://stackoverflow.com/questions/164432/what-real-life-bad-habits-has-programming-given-you