StackOverflow.com It’s a cross between a programming web forum, Wikipedia and Digg.  Basically people ask questions, people answer questions and people vote on the answers to push them higher or lower in the stack.  If more clarity is needed the original question and answers can be edited as needed rather than posting new responses.  Theoretically this means the good answers will float to the top and they will be complete answers so you don’t have to read through dozens of responses to figure out the complete answer.  It also means that old, obsolete questions and answers will tend to sink to...