So, this is clever.
A little program sits in your MP3 player and reports what you listen to a website, where it puts up charts and info about what you listen to.
Then it creates a personalised radio station playing the sort of music you listen to.
And then it tells you what people who listen to music like you listen to are listening to — Amazon-style recommendations based on usage.
I’m going to cheat a little and leave iTunes telling it about my favourite music whilst I sleep.
http://www.last.fm/user/nilexuk/ is my personal page. You can sign up from there if you’ve a mind to.