Nearly 7 million Nintendo DSis have been sold, let's just call it a hit
Right now the number is at 6.68 million units but with the pre-holiday shopping spree almost here, that number is likely to skyrocket. It seems that simply adding a camera and installing new software actually does spur sales. Apple is probably banking on this concept with its upcoming camera-sporting iPods, natch.
GameIndustry.biz via GoNintendo