Just to expand a little on that topic T3Pwnisher brings up, I strongly believe T-nation, especially this powerlifting forum, to have an outstanding quality advice to crap advice ratio while still getting a decent amount of traffic.
That's not to say other sites don't have quality posters and posts. But for example, I've visited bb.com and even registered as a member and there's some really good posters there. But there's a ton of garbage to sift through too.
Even when I google for ideas and advice, the ones from t-nation seem to often be some of the best.