If the question had been "what sex are most of your private messages from?" the results would be substantially different. In the last five months it's 2:1 female to male to me. That is to say I've had precisely one PM from a guy and precisely two from a lady.
Well, not counting the PM I got from highlander, an "informal warning" for calling someone a colossal asshole.
But I'm sure your milkshake brings e'rybody to the yard.