No I was told they r for points when u register and u can build up the points and get prizes. I will go look at the email a guy sent me and get back to u. I had no idea about them either until someone on here explained it to me lol.
Oh I can help you put the codes in to register your games on the club.nintendo.com website. Then you fill out a survey and they give you points. Then you can use the points to get items like wii straps, bags, cases for your ds, a few handheld games, and more. If in 1 year you hit 300 points you become a gold member and 600 makes you a platinum member. If you hit that level nintendo sends you a free prize. Last year it was a gold mario statue.
Thanks for helping! I really had no idea. I just saw someone askin about them on someone elses wii game auction so I lookin in my games...and sure enough - there they were lol.