So is the whole entire blockchain working to do this one thing, or can it do more? With Ethereum, creating a distributed dropbox is easy, and you can do a thousand other things too. Name coin, for instance, can be done with 5 lines of code on Ethereum. Do you think there is a way that peercoin can integrate with Ethereum?
Technically I suspect it can, not sure it that would be a wise move though. You could also set up contracts based on Peercoins as underlying value in Ethereum, that would be more attractive IMHO.