As some might recall from previous videos, when firing up the Wii U (and waiting for "network updates" to install, which we're all a little worried about), you are presented with the WaraWara Plaza, which is filled with other people's Miis, all broadcasting messages or in some case doodles.
Thing is, we've never really been explained how one goes about doing such things. But the following finally fills in the blanks, and stars the same joe average from the last clip.
Again, the unnamed star of the proceedings (who Nintendo honestly should use in all their commercials) is truly an everyday gamer. That being a person who has an active life, enough to have to step away from his console, no less than two seconds after turning his Wii U on.
We also see him display what can be best described as quiet annoyance when not being able to accomplish a challenge mode in New Super Mario U. Though the most important part is in the end, in which he manages to accomplish his goal, which he commemorates with a screencap.
From there, he exits the game and fires up the Miiverse app. The first part we see is a user's profile, and our star posting his accomplishment, like someone would put something on their Facebook wall. Afterward, he goes back to playing like it's no big deal.
Later, while having dinner, our nameless protagonist checks out all the responses that his pic got, which is filled with both text and drawings. While every little step involved is not detailed, it's not necessary, provided one has an inkling of familiarity of how social networks operate.