If you have a Last.fm account, post a reply on here with a link to your user page. The more people the better!
Here is my page. You can also see my recent tracks played here. That page automatically pulls data into my own database without a page reload, so if I'm playing music whilst you are on that page, it will automatically update the tracks. Awesome!
And here's another plan I have. Yes that's 2 in a week now! The plan is to add another field to users profile which can store their Last.fm username. Then on your profile page your recent tracks will be shown. I am sure there is more stuff that can be done with the data from Last.fm, I just can't think what else at the moment. Any ideas? Please leave a comment.