I guess.... but then again, I run a lot more on my wii than would warrant me blocking out for DS demos. Rather run full apps than restricted demos.
I deleted that channel the second it said it would send console information to Nintendo.
Not my thing, they can pay to do their own market research. Their online network sucks, They can kindly stay out of mine. They were no help years ago when 2 third party gamecube discs flaked on me and they had no recovery/backup policy in effect so I got screwed, therefore I disallow them access to a machine I now have configured with software to assure that does not happen again.
Publishers like to remind you a lot that you didn't purchase the game, but a license to play the game, but are very slow to help and quick to change the rules to benefit them, otherwise there would be a discount disc replacement service for the unfortunate.
Obviously this is a lot more than you asked for, but think about what you install on your Wii. A few demos to me are worth a hell of a lot less than the opportunity to play backups of my games while the originals sit safely on the bookshelf as images, saved to an archival drive in case a re-burn is required.