A better question is.. who cares, besides the people who waste the time making these misogynistic topics? Believe it or not - and I know this hurts some of the little manparts egos here - there is not a skill divide that exists because of gender. There are women in the world first guilds. There are women in casual guilds. There are nurturing, healing/caring female players, there are women who tank, there are women who obsess over dps meters and there are elitist, rude-bitch female players who are as good at being pricks as any guy. There are women who excel at the game and women who are terrible at it.
In other words, they cover the exact same spectrum of players as males.
At the end of the day it doesn't matter what gender someone is when it comes to games. If you think it does, you've had a poor/sheltered upbringing.
I'm a woman and I primarily tank with one of my several warriors or play a hunter. I dislike healing for the fact that people do stupid shit like stand in poison ticking for half their healthbar a second, die, and then bitch 'omg heal'. And you know what? Never do I go around promoting myself as a 'girl gamer' and frankly women who do annoy me. Do guys go around 'I'm a MALE NBA PLAYER!'? No, that's just stupid.
I game because I love to game. I do it because I'm good at it. And it doesn't have a damn thing to do with the plumbing. Maybe in another 30-40 years, people will get that through their heads instead of assuming every female is an idiot who flirts her way to gear or gets 'carried'.