WinCustomize uses cookies to the max Andy. Everywhere, for almost everything. You could go on one computer and set the forums to viewed on everything, or view all your skin comments, then go to another PC and login and all those forum items and your skin comments are all back on that PC because there are no cookies on that PC. Go to another PC, same thing. This is a very antiquated method, and I really wish they would completely redo the site to be more modern and efficient and also fix all the bugs (and allowing of illegal activities).