StackExchange is doing this a little as well, with many other sites being created. A good example of that is http://codegolf.stackexchange.com/
I'd like to see a stack exchange site where content like the link below will be loved and cared for, instead of tut-tutted. Or where I can have an open-ended "how might you implement this" debate without it being nanny-moderated to the scrap heap because it isn't a yes-no question, while the "new" queue sits filled with questions that are yes-no (so perfectly fine) but really should have been searched-for instead of asked. By the way, I'm not saying that I hate those questions, I just question a moderation process that leads to favoring mindless repetition over content that enriches us all. Of all the things to moderate away, the questions that provide insightful comment should be last.
http://stackoverflow.com/questions/1732348/regex-match-open-...