How is the TCM different than the Foresight Exchange (aka IdeoSphere) and the Hollywood Stock Exchange?
Both of these sites are only for “pretend money”. When people have to bet their own hard-earned cash they are notoriously more accurate in their evaluation of truth, and they ignore whatever biases they may have. Long-term, those who are good “truth pickers” will have more money to invest and thus have more influence on the market. In a pretend-money economy it is very easy to open a new account and reload your bankroll. With real money, those who are deluded or buy into propaganda pay with their wallets and eventually go broke. Anyone who has played online poker knows this all too well.