

Last.fm is a massive music database that has a list of the songs you've listened to, and then finds other people who have similar taste in music and also recommends other artists to you

All it involves is getting a plugin for the media player of your choice (iTunes, WMP, Winamp etc..), which sends the title and artist of whichever song you've just listened to, and then creates a nifty history of it

Examples of how it's set up

