Ormgas is an awesome internet radio site that lets you choose a song that multiple people listen to. The song is then rated, and the process repeats. It gets five @'s. I'm gonna say that it's only flaw is its dependence on an audio player and a web-browser for full functionality (I use VLC, maybe other media players have more interactivity). However, it's an enjoyable experience. A definite try. What do you think?