We seem to have a population here that already cares, and deeply, about rationality. I do trust them to upvote whatever has a lot to do with rationality and downvote whatever has too little to do with it. In fact, I'd go so far as to submit that we're doing something wrong if there aren't enough off-topic-ish, net-negative-karma posts; it would show that posters aren't taking quite enough risks as regards widening rationality's domain. I'm weary of the PUA and overly self-help-y talk, sure, but seeing nothing like it around here would be the dead canary in the coal mine.