At the end of the day, all this site did was show me 2 sexist coders (gasp!) who will likely never have enough respect for women to be able to work with any real women in a collaborative or professional setting.
Who said anyone was going to have sex with these women? Perhaps women just want to know where to go to avoid all the men? I think your comment is showing a lot more about you than them.
Are you asking me? It's the site's premise, not mine.
As for their heteronormative assumptions (if any), must the site be prepared to service all markets before they're allowed to enter any one market?
Edited as per gte910h's observation below.
"SXSW Interactive has attracted a strong following among web creators and entrepreneurs. Its focus on emerging technology has earned the festival a reputation as a breeding ground for new ideas and creative technologies."