Nintendo Points non-transferable between DSi and Wii

At the  once they’re loaded onto, say, a DSi account, they can’t be transfered to buy things for a Wii.

Nintendo Points cards will be sold in 1000, 3000 and 5000 amounts, while titles will apparently be priced at 200, 500 or 800 points.  The limitation on transfers is in place because Nintendo lack a centralized bank system, such as Microsoft and Sony use for their versions of the system, that could organize players’ points.

The DSi Shop will allow new titles and other apps to be purchased from the handheld and downloaded directly to it when in WiFi range.  However that DSi titles - including online content - would be region-locked, so software intended for Japan will not work on US consoles.

via