Just saw the shout out. It's certainly not busier there than here. The group of posters that make up the board come from an old board, collegefanatics. A good portion of those fans came from ESPN, when they still had a message board.
Outsiders are certainly welcomed, there just isn't the main platform there for other conferences. There was almost an SEC migration from another board and I obliged to hosting them, but they salvaged that other board.
It does seem like there are huge school site message boards that take a lot of fans. It's not a huge trash talking board, at least among members. The politics board gets just as much traffic and I'm pretty hands off.