Do you want to know what all of your friends honestly think about you? Do have a rant that you're dying to get off your chest? If so, install the Truth Box application to your MySpace profile.
This application places a box on your profile that allows your MySpace friends to anonymously write what they think about you. You'll receive a message that someone has posted to your box, but you'll have no way of knowing who posted the item. The idea of letting your friends know (without any consequences) what you really think about them evidently appeals to a large audience -- this application currently has more than 6 million users.