I've just signed up for a last.fm account. Man, it really looks like there is a hell of a lot of stuff going on in there.. plenty to get completely lost in.
So far I've managed to set up my basic page at http://www.last.fm/user/ebauche/
I've also gone ahead and set up my artist page and I was pleasantly surprised to see that before I even set anything up that I had 104 plays of my tracks "scrobbled" – nice to know that people out there are listening.
Hopefully that gives me some incentive to keep writing tracks!