Nintendo's Miiverse social network will start life on Wii U before eventually spreading to Nintendo 3DS and any other web-enabled device, but it won't interact with popular social networks like Twitter or Facebook.
GamesIndustry.biz reports Miiverse will keep its focus on those already interested in video games. Nintendo of Europe's Laurent Fischer told GI:
The community will be the Wii U owners, who will have this common interest for video games and our expectation about that is it's going to be a way to enhance the idea of sharing information on the video game.
Fischer also said there are currently no plans to offer Twitter and Facebook applications on Wii U, citing Nintendo's policy not to offer a service that's already easily accessible on multiple devices; if everyone has these social networks on multiple devices, "what is our benefit to do so also?" asks Fischer.
Of course Wii U will have a built-in web browser so you'll still be able to get your fix of non-Miiverse social interaction for those times when OctoG123 just isn't enough.