More than $10 billion worldwide will be wagered on the Super Bowl this year, predicts the sports betting news site Pregame.com, with more than 50% of adult Americans having some money on the game. If history is any indication, many of those gamblers will walk away empty-handed. According to a January survey of 2,050 adults by coupon aggregator CouponCabin.com, 90% of people who say they’ve bet on the Super Bowl say they’ve lost money. And 16% lost $100 or more.