Junk title, but you can apply this article's critique to many communities in general (especially online ones with a myopic user base). On the whole, the StackEx

Junk title, but you can apply this article's critique to many communities in general (especially online ones with a myopic user base). On the whole, the StackExchange sites contain a wealth of information that's readily accessible and can't be duplicated easily. There's certainly room for competition that's not just a plain forum, but what that looks like I'm not sure. "Harmful" though? Have we already forgotten "experts-exchange" so soon?