gmaxwell,
could you point us to some sort of an official statement on the 'nothing-at-stake problem'? No one seems to really be all that clear on what this problem actually is. From what I was told the person who first proposed it took it down? So far I've heard many different takes on this particular subject.
a big problem for NXT is that the stakeholders in the project are very decentralized, so their 'PR' seems a bit off at times. There's really no one to handle these kinds of questions and an adopter/investor really has no where to get to them resolved.
thanks, -bm