I play not only online games, but computer, video and even good old fashioned pen and paper role-playing. And I am female and a dm/gm. I have a good group of players that play a range of gender from non to male and female. When playing, I call the character by the gender of its toon/character, as the character is not the person. I really don't worry about whats behind the screen as it doesn't make any difference to my characters on the screen. Play what you're comfortable with. And have fun..it is a game.