Oh, yeah I thought you were a guy too! It's the name, I think, which made me assume so.
So yes, it would be great if we had to option to show our gender. I agree! If we wish, of course (being optional).
Maybe it can be added? I remember I completed my gender in the profile registration page.
It would be nice to have it shown on our short info too.
Well, of course I believe in my particular case, it's pretty obvious with my photo, but for others would be useful.