>We're meant to assume they exist, but I don't see much evidence for it.
that's the point
i don't mention my gender online, i don't even think about it anymore. i've never camwhored, never derailed a thread with nonsense, never used the word "femanon" (eugh). the girls on here who plaster their stupid photos all over boards are a minority, i feel. i can promise you that there are plenty of females on here (okay maybe not so much on /jp/...) who will never reveal it. i've known many because i can always tell -- on 4chan, on mmorpgs, anywhere.
telling people online you're a girl is a recipe for a shitstorm, there is absolutely no reason to do it unless you want the attention. i'm convinced all girls who do give it away are really, really insecure. they should work on learning to love themselves before they try to get others to do so. it makes me sad to see it. hope you all straighten out, really.