Any server really has things to do. Its just what the player population that makes a difference. An active population will have tons of player active players. Really though, this game was pretty much designed for solo-ing and PvE. It doesn't really encourage teamwork, unless you get to actual endgame content and raiding. I think a good idea to encourage more active player groups is a more intricate PvP system.
Kupo=Short Vampiric monstrosity that turns fellow players into Lala's. I guess that make's me Van Helsing and im gonna have to put a tiny stake through youre tiny heart. xD