Since launching the Miiverse as globally available in April, Nintendo has remained committed to improving the experience for its users. An update a few weeks ago allowed users to post and reply on Miiverse outside of the Wii U and today, an update has gone live that allows you to share specific posts and their content to Facebook and Twitter. This is great news for Nintendo as a company as well as its fans, as increased exposure to Miiverse means more people will be interested in a Wii U.
Currently you need a Nintendo Network ID account in order to use the Miiverse, which can only be created on the Wii U, ensuring that Miiverse users are actually Wii U owners. We expect this integration to expand to the Nintendo 3DS once the Miiverse is made available on Nintendo’s handheld.