I just found out about this website, but I think it's going to become a regular haunt for me. Strangely it has nothing to do with SharePoint:
Give them the name of a favourite song or artist and they will create a personalized radio station for you based on that style of music. You can rate each song they give you to help fine-tune the station. And it's all free!
Now that I think about it, it does have something to do with SharePoint. This is very similar to the Knowledge Network component that Microsoft is planning to release later this year.
This wil allow you to track down other people in your organisation that share similar attributes based on your SharePoint profile. It can even look through your e-mails for keywords to suggest to you to add to your profile.
So not only can you find out about new music that you would like, but you can also track down that other person in your organisation that is passionate about Information Architecture for legal firms.
Isn't the internet wonderful?