This is purely for fun
Rsnake's blog, pointed me to a interested post from Mike On Ads. A page that attempts to calculate your gender based on a portion of your history.
I quote from the post:
The script analyzes the css color of various links to determine whether or not the user has been to that site. If the link has the “visited” style, then he marks the user as having been to that site. Now the Social History implementation of this is rather innocuous — it’s a clever way of only displaying only the sharing buttons of sites that the user is an active participant of. Of course there are far more interesting applications for advertising.
So, check yourself and see if your browser history can tell about your gender or not?