We had a symposium on leadership in virtual worlds recently, where research done by Utrecht University showed that it matters, if your avatar is male/female in World of Warcraft. As a male avatar you get more leadership tasks to fulfill, than as a woman. This could easily be verified by a male or female playing 2 avatars of the opposite sex. You can watch the recorded symposium (broadcasted live in Second Life as well) -->
http://www.eduverse.org/index.php/symposium2/
Tags: leadership, secondlife, wow