I think you'll find that there are quite a lot of "leftish leaning" posters almost anywhere you go. They always seem to be the most vocal about the topics they post on. I think it's a case of, "If I'm loud enough and annoying enough people will think I'm right!"
There are quite a lot of us center-of-the-road types, too. And, naturally, we are always right. Or left. Or somewhere in the middle, I guess.