This isn't a surprise to anyone who's close to internet gaming, but just in case you're late to the party...
More Girls Get Into Gaming
Spend 10 minutes in ourWorld and you'll notice many, many, many girls. Whether they're gaming or socializing, that's hard to say, but they're online and MIGHTY! Go Girls!
Edit: A pretty common girl/boy ratio in ourWorld's Cake Mania Room (note: the guy is me)