Second, the letter points out that the four leading Web browsers—Internet Explorer, Firefox, Safari, and Google Chrome—already offer various means of preventing

Second, the letter points out that the four leading Web browsers—Internet Explorer, Firefox, Safari, and Google Chrome—already offer various means of preventing advertising companies from tracking users. Perhaps I'm wrong, and please correct me if I am, but I don't think this is true -- is it? I thought that features like Private Browsing (Safari) and Incognito (Chrome) only prevented the browser from recording page and search history (or using form autofills) on your local machine. This is the first I've heard that it affects user tracking by advertisers in any way, shape or form. EDIT: And the more I think of it, the stupider this "solution" becomes -- basically, they're asking users to forego recording their own browsing history to avoid being tracked! Well, where do I sign up?