An interesting link from Jill to a site called Internet and American Life shows that women are more likely to play games online than men are. While this is surprising as the "gamer" is immortalised as a male, socially dysfunctional geek, looking at the statistic twice should make it less surprising. It's been accepted knowledge for a long time that women use the net more as a communication tool for social activities, and playing online games is to many players, male and female, about being social rather than reaching high scores.
An other question is... what is games? I'd love to know the type or genre of the games these women play - that could say something about what they seek when playing online - do men and women play the same games, and do they even consider the same activities to be games?