Pardon me, your browser history is showing
One of the problems that's plagued netizens since the inception of the world wide web that their browsers have a habit of leaking every site they've visited in the recent past. A quick stop at Blowupdolls.com, Mysecretbusinessproject.net or any other site is available to any webmaster with rudimentary coding skills.
http://go.theregister.com/feed/www.theregister.co.uk/2008/07/28/browser_history_leakage/