I was just wondering, Ad-aware checks for those tracking coockies like gator, adserver etc. But why doesn't it has an option to prevent those coockies from being placed? (or maybe I haven't looked closely enoug) If you go, in Internet Explorer, to tools->internet options->privacy->edit, you can add domains which you don't want to allow coockies. All those values are stored in the register To block a domain, you have to add a DWORD with value 5 Why doesn't ad-aware just adds the list that they have of those coockies to the register so that they are blocked? Would there be intrest for such a program, that adds those registry keys and thus block those coockies, or is there allready such a program out there? Also, what harm can those coockies do, why does ad-aware marks them as harmfull?