I enjoy Miiverse and use it quite a lot actually. being able to post screenshots to show funny glitches, cool areas and ask for help if needed. There are a ton of people using the service and replying to posts. Being able to have favorite communities keeps you in the know on the ones your interested in, and being able to follow users and dev posts is nice.
I do wish there were more devs having an active presence, but it's just cool to see them participating with the communities at all. Barbie from Zen and the guys from twin tribes are pretty active. A_Trey_U from Treyarch was pretty active when both blops2 and ghosts released, but then dissapears again.
There is a lot of potential there and adding new features and less restricted functionality would be great.
