Like google circles. You can make different circles to fit the different things you like doing, and have other people who like doing them too. Think of it as multiple friend lists, each list ( or circle in this case ) being a certain type of gameplay. So you could have different people in different circles depending on what you are friends with them for. so players 2,5,9 in Circle named groups and players 1,3,4,6,7,8 in a circle named raids. The group circle is just people who you like grouping with, while the raid circle is people you raid with. Hope that makes sense.