Indeed. It allows you to stream music from the server. It also has some gamemode additions that are amazing. Unearth is always hosting music servers and it's great to listen to System of a Down while playing survivor, and have all the other clients use it too.

The next version is supposed to have video streaming capabilities in a side window. Sounds pretty cool.

Eh I'm not really going to argue any further on this. It doesn't matter, blur will do what he does, no matter what people like me have to say about it.