Libertarian journalist John Stossel explained InTrades prediction markets, and forgot BetFair. Posted on March 12, 2010 by admin ABC News, in 2008: Related PostsJohn Stossel – Gambling in America – [VIDEO]How do InTrades prediction markets work, and are they really accurate?INTRADE-TRADESPORTS CEO JOHN DELANEY CENSORS CNBC ON YOUTUBE.