It sounds a lot like Groove, though according to this article the concept was developed through the study of teen behaviour on the internet. The first product from Microsoft's NetGen team, it will allow users to "create groups of up to 10 people, trade messages, listen to music from each other’s collections, and share photos. Each group has its own icon and allows users to create new groups that add—or drop—others at will." Whatever its source, it's a good idea, though users may find some of the restrictions limiting. I wouldn't have called it 'Cliques' though - that sounds too much like a guidance counsellor speaking. I would have called it 'Clans' and brought in Mel Gibson to promote it. And I would make the software free, but sell clothing and items emblazoned with Clan logos. Too cool.