Last.fm is a 'music networking' site, which works by looking at which music you play through your computer (e.g. on iTunes), then uses this information to build a profile of your listening habits.
This profile is then compared to that of other people, to see who has similar tastes as you - tracks or artists can then be recommended, clips or full-length preview tracks can be listened to, etc.
Think of it as a MySpace for musos...
Needless to say I've uploaded some BITL stuff, which you can listen to right now by scrolling right down to the bottom of this page & hitting 'play', you lucky people!
While you're down there, you'll see another fun little feature - the music quilt, which contains links to the Last.fm artist pages of all the bands I'm currently listening to.
The only thing is, I'm going to have to be very careful I don't listen to anything naff, as my dubious taste will be exposed and I will be subject to the ridicule of my peers.
So no change there, then...