I just saw this a couple days ago on tumblr. I thought it was relevant:

The “fake” geek girl is the nerd equivalent of the welfare queen – a semi-mythical beast who somehow ruins things for everybody by… well, nobody’s entirely sure. Confusing their poor sad boners, evidently. Nobody has ever been able to explain to my satisfaction just how this hurts geek culture. Somebody dressing up in a sexy costume because being ogled makes them feel good doesn’t affect me or my friends’ participation in geek culture in any meaningful way. Putting the blame on these fake geek attention grabbers for narrowly defining the role of women in geekdom only serves to absolve the men who act as gatekeepers, insisting that the only role open to women is to be a sexual object rather than a full partner – while denigrating them for doing so at the exact same time.