Wutaiflea said:
Also, if you don't know what to say to women, try the classic "tell me more about yourself/subject you just raised" line. It takes the pressure off you to say just the right thing and makes you seem interested in her
As a guy who's friends with a lot of girl gamers, I vote this.
Most girl gamers I know won't start a conversation with a stranger who knows they're a girl, unless some variation on this theme happens.
Beyond that, you'd need to meet them through a clan or a mutual friend or something. In which case, you're better off meeting them in person rather than just in game.
Once you're past the initial meeting stage though, be yourself, and don't push for love. That goes for offline and online. If you're obviously after a relationship and nothing else, you'll either look desperate or a
misogynist. Aim for friendship, anything else that happens should just be an extension of that anyway, if you're doing it right.