I don't see the problem really, if I was female I would be happy that people thought I was a guy; the majority of males on the internet are even more stupid and obnoxious than they are in real life (which is bad enough). Point proven. Why would girls want to make it apparent to strangers that they are female unless they are desperate attention seekers, if you actually make friends and talk to people it's obvious what sex they are. I personally don't care if you are male or female, if you are male fine, if you are female fine i'm still going to treat you exactly the same way over the internet.