CyclopsRock
Member
re: gambling, most sportsbooks work as has been discussed, where the bookies hedge their bets (literally) by altering the odds such that they make money either way on the arbitrage. HOWEVER with the Betfair Exchange markets, this doesn't happen - betfair don't set the odds, the market movements do in the same way the markets set share prices. There can be some manipulating done here by Betfair, but typically it's just using their sportsbook bets to liquidate the exchange market. The beauty of the exchange market is that Betfair makes money off the winning bets, but it's just punters (or other bookies or whatever) actually providing the funds, so they don't care who wins, they make the same amount either way - approx 2% of the total staked. As such, the exchange is more of a "widsom of the crowds" style measure, where as the sportsbook odds are, as pointed out, manipulated somewhat (though that can be illuminating in its own way, since they are manipulated in response to the market movements anyway).