Prof Michael Giberson still into prediction market manipulation Posted on June 15, 2010 by admin I am personally fed up with this theme, but our good friend Mike Giberson has some inklings. See also Paul Hewitt’-s comment. Related PostsThe Giuliani manipulator buyer is backAs Justin Wolfers noted, maybe there are today bigger practical obstacles to prediction market arbitrage.InTrade CEO John Delaney refused to improve the fairness of the trading on his Ireland-based event derivative exchange.