What somebody needs to do now is to start a futures exchange (as opposed to a IOU ezchange like Yobit and Bloombit). It
- is more ethical so to speak, since the counterparty risk is much smaller,
- provides real price discovery, since anybody can short futures. On those two IOU exchanges, only the exchange can sell (as well as those who previously bought on the exchange.)

I would do this myself but I am no programmer.