I've been waiting for this moment for years, now that duels are officialy announced and should come out really soon, I think it would be a good idea to add a new subforum to diablo 3, for those who wish to organize tournaments and ladders with the dueling system.

http://us.battle.net/d3/en/blog/8163085/Diablo_III_PvP_Update_-12_27_2012