The DAI stablecoin is the first of it's kind, so it's kinda hard to understand at first glance. It offers 1:1 parity against the dollar by converting any excess to a variant of Eth. How this will work in trading, I have no idea since it seems like and advantage for buyers when you look at it.
It looks like you need an Eth wallet running to purchase DAI. Does anyone know if we can purchase/convert DAI from exchanges? If so, which ones?