I have no idea what minecraft is, but from the few short videos I've looked at it looks fun, especially in a cracky-context.
I don't have time to figure out how to play it, let alone time to play it, but it sounds like a sweet initiative. Hopefully people who build stuff there will post some screenshots here.

So, in spite of not being able to do anything with it right now, thanks for taking the time to set it up.