Yahoo hired lap-dancers to entertain the participants in the Hack Day Taiwan open event. No matter how inclusive to women is the hacker community, events like this kill any good intention. Why is this is bad?
First of all, speaking on behalf of women participants (the real hack-girls), being compared to sex workers - this is really not appropriate association to make. They give bad example and a bad idea on what a "Hack girl" should look like. A number of male participants have probably felt similarly, especially if some of them make efforts in their everyday life to be inclusive and treat their women colleagues equally.