Social FM as its name suggests is about people and music.
How does it work? Easy. When you log on to the system, you can stream and listen music from other people while other people do the same. All the content is user-generated.
You can use it with either a desktop client or with Facebook, and now with a mobile client. It is supposed to work with any S60, UIQ and Windows Mobile device but you can check the whole list here.
An interesting use of the system is to have both the desktop and the mobile client on, so if you have a decent network connection you will be able to listen to all of your music without storing it in your device (usually more memory-limited). More over theare more than 100.000 digital radio channels available.
The one year subscription fee is 19.99 $.
