Well it's not always 6 decks on the house. Sometimes it's a free 1-on-1 or if a new project comes out, they might send you a free DVD on the house. It's really different things.
So basically they put a challenge up some time on sat and you have til the end of the day to put up you by the end of the day. Do you just have to keepo checking the forum or can you sign up to be notified by email.
Thanks