The great thing about this is that there is no requirement of bodily placement set by the challenger, and the size has to be just a minimum of a US-sized quarter. I have a friend that got a MySpace logo tattoo for a hundred bucks on his arm. He stated that he didn't care because he actually enjoyed MySpace and that it was going to be around forever... I wonder what he covered up the tattoo with haha.
But this Nitrogen Sports "promo" (if you will) is pretty ingenious! I can't wait to see the videos that are procured from this challenge, and honestly, it was enough to get me to sign up for an account on the site just so I can follow the chat there... so obviously, it's working lol.
OP, maybe you should tell N [2] to officially open an announcement thread here for a bounty so that we can all follow the progress
Kudos to marketing of Nitrogensports. 