It's a number of things, honestly, since pinpointing one meaning is quite hard for me to do. So here's a quick rundown:
*It's an OOC forum for people of different games and servers to meet each other and mingle for whatever reason.
*It's a way for people to stay together after their server or game falls apart and/or they move on to another server within the game.
*It goes here. Quit asking where penis goes.
Any questions?