When I typed in 'final fantasy forums' on Google looking for forum to join, EOFF was like the first or second one that popped up. I did look around but I was impressed cos Eoff is the only forum that had whole forums devoted to every Final Fantasy from the first one to XII. Some others only went up to IV and others bunched FFI - III in one forum which kinda sucked cos everything was mixed up. Plus its a lot faster than the other sites ;-)
Eoff is the best FF forum by far I think.