It is very common in English language internet forums for people to hide their sex. Many people think that only the words they type are important, not what sort of person they are.

It is not easy to tell in a forum in English if the person is a man or a woman unless they make it clear. Sometimes in chat people will say "a/s/l?" That means they want to know: Age, Sex, and Location. Sometimes people will not respond to that though.