A new service being used inside the workplace at Google headquarters allows employees to bet on the likelihood of future events. In Google's system, employees can bet on how the company will perform in the future, forecasting things like product introduction dates and new office openings. The market is based on the idea that a price established for an event will reflect bettors' consensus of the likelihood that it will happen.
See "At Google, the Workers Are Placing Their Bets", Ian Austen, The New York Times, September 25, 2005