Americans illegally bet $2.5 billion on the NCAA Tournament each year, the FBI estimates.
Perhaps that's no surprise, considering that 65 percent of office workers participate in a workplace pool for the tournament, according to a Vault poll. That's even more than the Super Bowl (58 percent), the survey said.
Officially, betting on college sports is only legal in Nevada.
Although the FBI likely will not be conducting a sting operation in your office, participating in or organizing inter-office gambling is illegal. Yet for the average college basketball fan looking for an edge in a March Madness office pool, there are lots of experts on the Web on how to pick winners including a University of Illinois expert in statistics and data analysis.
The NCAA selection show was Sunday. The first games start today, March 13.
To see who made the cut for March Madness 2012, click here.
By the way, the odds of getting every game correct is about 1 in 13 million.
Do you feel lucky?