I've been a contributer to a few scuffles but I don't think I've seen any of these "wars" I hear so much about. Mostly I think people read my posts in the wrong tone, give me shit and then I panic and and just fart at everyone and make it worse. One memorable time was a weird argument with someone about The Dark Knight. I said it was a shit movie, that the films were far too melodramatic and that was that until he decided to insult me and what have you. Seemed to think I know nothing about movies, how they are made etc. And then he proceeded to demonstrate his lack of knowledge on that exact subject! Some people, man! But yeah, I have trouble getting a point over in forums so a lot of people take things the wrong way.
But the only big thing I ever saw, really, is the EC thing. Even then I didn't pay any attention... A lot of reading involved. Heard about a lot of stuff, though, like the Vault101 thing.
Does the Xbone guy count? the guy who kept making new accounts to argue with people and start pro Xbone threads? Not sure if it does...