You must have at least 20 posts per week, and 85% of these 20 must be in the gambling section.
I don't get what this means. 85% of 20 posts, meaning 17 posts (Seriously. Why not say that?) Or 85% of all your posts (Then simply say 85% of all your posts :-/)
Good rates, and I like the mystery bonus. Gives an incentive that many other signature campaigns don't have.
Good luck, and merry Christmas!