Hmm....that's an interesting question! When I'm doing nothing, I notice the over-flood of girls, yet when I'm in a Role-Play (or Group/Party), I'm literally the only girl there. Weird, yet amusingly funny.
However, in the Forums, I'd say girls hands down. There are many ladies out there - heck, I'm a girl. So, I'm gonna go with the females of the species.