About 18% of American drug users got their drugs from Silk Road

Before it was shut down earlier this year, the popular black market for drugs, Silk Road, was responsible for an estimated 18% of all drug purchases in the U.S. The website ran for three years via the Tor network before it was shutdown by the FBI and its founder, known as Dread Pirate Roberts, was arrested and charged with, among other things, attempting to contract a murderer to kill a former Silk Road employee.