Ok, cool, but I guess someone must have pointed out this before right?
We need then to open a discussion on how to incentivate big exchanges to implement NBT/USD pair. That would be a very well invested money, IMO.
I read that NBT have already been used to short bitcoins, taking into account they are much more fluid (when moving them from exchange to exchange) than USD.
Imagine for example Bitfinex and Bitstamp have NBT pairs implemented. That would facilitate arbitrage between both exchanges as arbitrers could easily move NBT (USD) from one another.