Not even sure why, since none of the "buyable" items really interest me, except for maybe the Hanafuda Cards set. Though I could get mass amounts of BJs from a friend of mine if I got her the Animal Crossing playing cards, which I can already afford with 500 coins.
But man...it sucks. I used to throw away everything that came with games except for the booklets. So those little slips that have the product registration numbers... Yup... No longer available. I could have at least gotten 30 more points or so by registering New Super Mario Bros. right now, but NOOOOOO, the slip's no longer in the case! Same with Animal Crossing and probably other DS games I have.
I think I'll ask some friends if they care about me registering their games. o.o Unless of course they're interested...in which case I'll knock them out and register their games, ha!
Some of this is kinda cool...but I dunno if I wanna waste my precious coins on any of it. ;_;