So with darkNXT out there has anyone thought already about mining it?

I have some thoughts on how to do this from the technical standpoint but don't really know if it's profitable. Can someone perhaps provide rough estimates on number of darkNXT accounts and their total amount?
~250M @ 1000+ accounts.
Edit: U should start from one with almost 50M on it.
holy crap that is a LOT. OK, can we get some darkNXT tracking built into blockexplorer and into API?
ETA: how easy would it be to adapt one of the terraminer 2THps machines cranking on that?