It is somewhere on the deeponion.org/community somewhere, its almost as big as bitcointalk lol.
Its a bot that automatically generates a list of participants whom have not posted the required number a week, which is 10 and only 50 characters.
There is also a bot that checks your drop addresses, and if there has been more onions sent out than the 10% max of the airdrop then it automatically creates a list of banned users.
Its really simple. Play by the rues and you get your onions. I have with out one problem.