To me gender is the least important thing in the world and that feature would be totally unnecessary. As said before, you can always ask...in case that seems important to know, for whatever reason...maybe if you're straight or gay...it still seems to be important to many people, which I of course accept, but it's not to me.
But if we can get this option including the third gender, it would be a bit fun...then I could finally show my gender properly...
I hate that I have to choose a gender on many other websites...it almost discriminates me because I don't have a choice if i want people to know, and usually there are just two options.
Just for the record, I have an extra hole (female)...so what difference does it make?