I think their aim is to get them into use in education, hopefully sparking a generation of programmers and people interested in technology. It's a really good idea, as with companies such as Apple striving to make technology easy to use and accessible, I think it's important that people understand the technology that goes on in the background.
Not sure what I'll do with one yet, probably media server will be the first use, as well as trying to get the development IDE's I use up and running.