I played around with it for a bit. It's frustrating to me as there is alot of really cool stuff in the platform, but it is such an opinionated interface that it distracts from the overall mission. Some of the apps are too complex for very young children, but the interface feels too primitive for 6-9 year olds who aren't living in a cave. 5 year olds are adept on awful UI like YouTube, this is too simple.

There are some really cool apps that would be better served in a more traditional Android/iOS style tablet interface. OLPC is/was very pushy about their point of view.