I'm actually pretty impressed by the moderation on Miiverse so far. When I first heard of it I was worried that they would end up deleting every post that made negative comments about Nintendo or the games, but they clearly allow criticism as long as you keep it civil (The 50Hz argument on the Balloon Fight board being a clear example of this). Deleting posts for mentioning alcohol is maybe a bit harsh, but I certainly prefer that to the cesspit of racist, homophobic, misogynistic idiocy that is the largely unmoderated Xbox Live.