[quote name='UncleBob']That.
Not that "everyone" can double their coins, but every product sold can now, in theory, be doubled. If I register all my games, then, trade them in (or resell them on eBay), they can be re-registered using this UPC method by whomever buys them down the road. The intent of this program is to reward the initial owners - those who have given the money to Nintendo and helped the sales of that particular title. Something that allows people to register used copied on a regular basis probably won't last very long.[/quote]
Maybe this would happen if Microsoft offered a similar service, or Sony Rewards, but I doubt it will with Nintendo. The company has crazy brand loyalty, not to mention a lack of 'hardcore' gamers' - I doubt there will be much exploitation. I honestly don't see the thirty-something soccer mom who bought Wii Fit to shed those jelly rolls purchasing bulk used games for Club Nintendo points.