Well aside from the fact that I think the concept is a bit weird and superficial, it loads reasonably quickly and works quite well. The biggest drawback I have is you don't know how many photos there are to go through, and once you start repeatedly hitting the same photos again (which logically don't allow multiple votes) you don't know don't if you've reached the end, are close to the end, or what. I ended up going through sometimes 10 or more photos that I already voted on. I think you should have a couinter of a) how many photos in the group (male/female), b) how many you voted on, and c) how many left to vote on. Also, don't bother displaying a photo a second, third and fourth time. Just display the ones that require votes.
The colours are fine, but the orange needs a bit of toning down.
I find it odd that people would participate on the site, but to each his own.