From the Microsoft Haters Club

Now this is a truly informative little website. Apparently, Internet Explorer and Windows have been designed to hide from you files and folders that keep a history of everything you have been doing online, even if you think you got rid of that information. Every website, every email received and sent, plus attachements. It also give info on how to find these hidden folders and files and get rid of them. A must read for anybody who wants their private info private.