I'm not so much anti-social in games, I just don't know what to say in a lot of cases. In the case of EVE, well, I spend so much time learning the intricacies of the game that I generally don't get the opportunity to converse. ;P EVE is awesome.
I am a little chatty in Call of Duty 4, mainly because you get a lot of the same whiny players that play Counter-Strike, just nowhere near as many of them. In cases such as that, it's almost necessary to taunt your way into their good books. And considering I generally play with Armegeddon...well, let's just say that we make a good team as far as smack talk and trolling goes.