Last.fm is a major music streaming service. Its claim to fame is its ability to help you find music that's likely to be just what you were looking for. Last.fm tracks what you listen to on Internet radio and your various mobile devices, then recommends new music just for you. Last.fm is available for iPhone, Xbox, iPod Touch, Android and Windows Phone 7.
Last.fm does not sell songs, but offers selected downloads for free. You can also listen to short previews of many songs. You can add tracks or purchase tunes directly from the iStore. Last.fm also lets you tag tracks and share them with other Last.fm users.