AppleCracker
Call me Mikey
I play it every now and then. Currently, Luigi is trying to go on a date with Mario's daughter and I won't let that happen!

basically thisBest description I can give is it's basically Nintendo's version of The Sims. You select Miis to live on your island and you basically observe what they do, solve problems, give them clothes, decorate their apartment, and play some side mini games. As PBG put it, it's like an app that you check on once in a while. You can write lyrics for songs for your miis to perform, which can be very amusing and a mini game called Quirky Questions which allows you to have a Mii ask a panel of 6 Miis a question.
It's really the kind of game that if it sounds interesting, you'll probably like it. If it sounds boring, you probably won't. Personally, I love it. I got a major kick out of the wackiness that sometimes goes on. XD
I would look up videos. PBG (PeanutButterGamer) actually gives a very good review of it. That would be my recommendation.