As they watched the [Halo 3] games play out and tracked the comments that players made to each other, the researchers observed that — no matter their skill level, or how the game went — men tended to be pretty cordial to each other. Male players who were good at the game also tended to pay compliments to other male and female players.
Some male players, however — the ones who were less-skilled at the game, and performing worse relative their peers — made frequent, nasty comments to the female gamers. In other words, sexist dudes are literally losers. [link]