This is how the SomethingAwful forums remain, in my opinion, rather high quality despite being affiliated with an offensive comedy website. $10 and strict mods seemingly breed compliance with whatever regulations you care to enforce.
SomethingAwful's the perfect example. They're the best at what they do, and their forums, while a bit immature for my tastes normally, have hands-down the most talented people there than I've found anywhere. I'm astonished at the artistic and entrepreneurial visionaries I see posting like mad there. I wish some of them would post here too.