Hate:
The posters who are all sexist assholes and crude or whatever, than fawn all over the latest forum girl. I'd blame the women for attention whoring, but I don't think saying "I'm a girl" ought to get the response that it does.
People who join a thread to nay-say. It's one thing when it's the latest big thing and you want to weigh in with your opinion, it's another when you reply to every goddamned PBF or Penny Arcade thread just to say it sucks. And it's the same damn people, as if saying it 10 other times wasn't enough. Disco Stu, this means you.
I hate the fuck out of people who can't distinguish a discussion of opinion from some sort of genaralized "quality" or "success" discussion. Like when I was looking for opinions and thoughts about the PSP before its release and commented on how I wasn't that into Nintendo's handhelds and got shit for it.
Gaming elitists. People who use the word "old school" meaning they would jizz their pants if only Nintendo were king of the hill again. People who mythologize the 8 and 16 bit eras of gaming by way of insulting modern games or other people's tastes. I don't mind the opinion, although I disagree-- it's the fucking righteousness that goes with it. And along with those people-- I hate people who only like Japanese games.
People who talk about "polish" and "presentation" as a way of putting somehting else down. Here's a tip-- 90% of those "polished" games are turds, boring as fuck.
People who feel the need to run down some particularly company. Usually Sony, but Nintendo, and MS, too.
I hate people who post in a political thread precisely because some bonehead has made an indefensible post. It's like watchign piranhas. People feeding their need to be right and superior. I lump myself in this category-- I truly hate some of the posts I have made when in hindsight, and brief dismissal would be more appropriate.
Anybody who calls any developer "lazy." Especially somebody who's on a goddamned forum all day.
My last and strongest hate is for all the fanboys (Sony and Nintendo) who are picking winners week to week based on sales in the slow season. It was annoying with the nintendo assholes were predicting death for any Sony portable ("it'll cost $400! Battery life sucks!"), it was more annying when PSP started outselling the DS ("DS is doomed! Third pillar my ass!") and now it's even more annoying with the PSP all but declared dead. And the Propganda Minister picture is getting really old. Are you all so wounded by the fanboys on the other side that you feel justified being an even bigger prick when you get the leg up on them?