they push their own coin, they just scam the people for their bitcoin, the exchange is mostly themselfes, you exchange your btc in bcc and than in dollars when you want to invest with them. your invest rises when btc rises, but not as much as you would do in holding btc, so do their coin aswell, later you get for your dollar investment less bcc so less btc than you actually invested ;) i think they will just can continue with many stupid people who dont care - so very careful with open eyes, there are much better options out there!