Siliconera: "The digital content business isn’t one of Nintendo’s stronger points. While a number of great games exist on WiiWare, the company hasn’t been very successful at instilling a habit of checking the online Wii and DSi shopping channels in the majority of its customers.
The most significant hurdle in this regard has been communicating to users when new digital content is available. One of the reasons behind this, according to Nintendo president, Satoru Iwata, is a lack of effort on Nintendo’s part, and a consequent failure to realize the potential of these channels on the part of third-parties.
This is something Nintendo kept in mind while developing the Nintendo 3DS."