I'll highlight these since it comes up here a lot (and is the second comment on that page, right underneath the ever-expected kitchen joke) --
> Geek technology culture not appealing:
> Women: 20.6% Men: 34.3%
> Dispel stereotypes that boys are better than girls in math and science:
> Women: 48.9% Men: 31.0%
Working in technology is appealing to girls, but growing up being told that's not what girls do is what hurts.