Well, I can understand the sometimes heavy handed moderation...these threads get NASTY some days! (and I have been just as guilty as anyone here of perpetuating it)
Basically, the best thing to do is to point out facts when others use opinions or wishful thinking, and when they get vile, abusive, or make otherwise moronic comments, just leave them be. They look foolish enough without anyone pointing it out.
It took me a while, but then I realized, I can get my point across without being a total douche about it, and I don't really have to engage in pointless arguments with people who will NEVER come around to my point of view anyway!
I enjoy debate...which is why I post here frequently...but there are enough intelligent, open minded people to talk with here that it's really not necessary to "feed the trolls".