Football betting online odds can oftentimes be determined by who the public likes. There is nothing more popular with gamblers than football and because of that popularity gamblers should keep in mind that the lines that they see can be directly influenced by public perception and preferences.
Football online is the most popular on the NFL. And with that comes certain teams that dominate the headlines, such as the Dallas Cowboys and the New England Patriots. Beyond that you have the most respected teams such as the Pittsburgh Steelers and Indianapolis Colts. You also have teams with large and strong national followings such as the Green Bay Packers and Chicago Bears. All of this factors into the pointspreads and odds that you see when you get involved in football betting online.