http://online.wsj.com/article/SB10001424127887324747104579025292386030188.html"The twins made headlines in July when they announced the creation of the Winklevoss Bitcoin Trust, which would operate an exchange-traded fund dealing only in the virtual currency of bitcoins. Putting their profile and wealth behind bitcoin—which has attracted intense interest and criticism as a form of money that exists beyond the control of governments and central banks—represents a big risk. "You have to be willing to gamble a bit," says Tyler. "Entrepreneurs are a special breed. They make their own fate, but there's no safety net if it doesn't work out."
