Although BitShares and its SmartCoins™ can be sent and traded just like bitcoins, Bitshares’ open platform offers a range of innovative features, all of which have boundless trading options on the Bitshares network in the form of SmartCoins™
And it's official : http://bitshares.github.io/technology/price-stable-cryptocurrencies/
Urgh, seeing the "TM" there is not very pleasant. And that's an ugly name we'll have to accommodate with. I guess that the legal copyright BS had to happen at some point.