Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
It was a great Draft format to use which reflected VGC game play, but had so many more options for personal tier-ing and the like. NatDex 6v6 Doubles Draft just isn't the same, and I know that my draft league would love to see this format back!