This is what I sent them as follow-up:
NuBits is a cryptocurrency that was created to address volatility by pegging to the USD. The peg is maintained by specially designed trading bots across multiple exchanges.
The innovation in NuBits is the separation of “network value” from the unit price of NuBits. Speculation on the growth of the Nu network is facilitated through the trading of NuShares. Holders of NuShares provide transaction verification for NuBits and also vote on the money supply and interest rate available to NuBits.
There is no reason to speculate on the future value of NuBits because multiple forces are concurrently acting to maintain the USD peg. NuBits was released on September 23, 2014 and has maintained its goal of 1:1 NBT/USD equivalence since that time despite average daily trading volume of ~400k USD.
NuBits was the creation of professional software developers who gathered within the Peercoin community and continue to actively support Peercoin as a fundamental long-term store of value.
The trading bots which work to maintain the USD peg are funded by elected Liquidity Custodians who make a public commitment to maintain buy/sell walls. I am being elected as Custodian and have promised to provide 20k USD value in BTC for sale against NBT. If you will incorporate the BTC/NBT pair these funds will be immediately deposited in your exchange and begin trading against anyone wishing to sell their NuBits for $1 in BTC.
The instructions and calls in NuBits are based on Bitcoin and Peercoin core architecture and can therefore be technically integrated into the exchange in a similar fashion. While I am not personally a NuBits developer, they are easily accessible through http://NuBits.com. I will do my best to answer any questions you have, but I will likely have to direct you to others for specific technical details.
Thanks again for your interest. I really hope you will take the time to study the NuBits whitepaper and understand that it is a true innovation in a very crowded copycat cryptocurrency space.