Unfortunately all that mailing is figured into their operating costs so its just passed to customers or tax write offs.When I receive junk mail, if it has a postage paid return envelope inside, I stuff everything they sent me back in that envelope with a post-it note that reads: "Quit sending me this crap". If enough people do this, it will cost them plenty in money for the return postage costs. Just think what it might cost them, multiplied by millions of returned postage costs, lol.