You can now block people by gender from commenting under your pics or on your "wall".

/editsettings.php?hl=cmnts

I know there are people who are furious that they wrote "I'm interested in women only" and still receive comments from gay males and especially those nasty private uploads

Just remember, blocking men would not increase comments from women. I know that some have this backwards kind of "only registered users can see external links" and I assure you it does not work. You will likely feel alone and leave the site because of "no attention". Well... it's up to you.