Start a Rapidshare/Megaupload/ShareCash download exchange website. Kind of like the Digg-exchange websites like piqqus.com among others, but you download files (restricted from 5mb - 20mb) and you earn points. To tell if someone downloaded the file, they must enter the md5 hash of the file. To point them to the rapidshare link, show it (no hyperlink) and make them Copy+Paste it into the url box. Sell advertising and download credits. Ingenius?