Well, I'm gonna have to go with Baconfry in this, I love the forums.
I get a good kick out of some of the people in it, while simultaneously I am awestruck by some of the amazing community content that is created here. This is said for all the glamorous in-game builds posted, the in depth creativity of some suggestions that make so much sense, and there is a bit of a "family vibe" associated here. It's a very fun experience overall I think.