About $3 billion worth of sports betting is done every day. A 2008 Gallup poll said that 1 in 6 Americans had bet on sports within the past 12 months, and that didn't even count for the millions of people playing fantasy sports, which can technically be viewed as a form of betting. Sports betting is omnipresent, and part of every sports conversation—there's a reason why newspapers, blogs, and television shows still mention football lines when doing pre-game talk. Every part of sporting culture has its cast of characters though, and sports betting certainly has a unique crop of them. Uncover these bunch of colorful, but sometimes degenerate, and even criminal individuals in the 10 Types of People Who Bet on Sports.