Nintendo has created a web-accessible version of the Miiverse, the Nintendo social network. The Miiverse was previously only accessible from the Wii U, but now you can now browse posts about your favorite games and maintain your profile from the comfort of your own PC or mobile device.
Mike hopped in to check out his account, since he remembers his Nintendo Network login and I don't. (Hey, I've barely been playing Wii U lately.) At the moment, you can't post new content from your PC, just browse existing posts.
Check it out here.
(h/t Craig Lupienski)