I think that it all depends on the way girls are raised in relation to videogames. I think if a young girl sees her dad playing videogames at a very young age she would be more inclined to play video games. The same thing with smoking, drinking, mowing the grass, what ever. We as a gaming community has less gaming community have a duty to welcome ladies into gaming and gaming websites. I think thats another reason that there are less women into gaming. Even though nine out of ten people would say they wont vioce chat over Halo says another thing.
Point is we need to welcome girls into this community whether they are here or not. We (everyone) needs to take an active role into welcoming every group (Female, Gay, Lesbian, Black, White, Chinese, Canadian ext.) into gaming whether we like it or not.