Obviously it can be used for specific purposes. However this is a universal, omnipotent snapshot film of everything you do which will be readily available for hackers and hostile government officials, and there likely won't be a way to remove it easily if you hate that sort of thing. Probably have to write a script that monitors the files and deletes them, since MS has a knack for restoring things you delete by hand that they want you to keep for their benefit. Or they'll make it core to the system so you can't delete it without breaking the OS