$ and the NFL

The major change in the betting on the NFL has to do with the internet. There are over 200 different internet websites that one can bet on the NFL games. Granted there are many people who bet in the casinos around the US but the net has added a major bundle of cash to the total overlay. But who? There is no documentation on this. Where is it coming from? Just try to find an answer to that question.
Talk about mailing in a game...The Pistons laid a big egg at Boston. Boy would I be ticked if I forked over big bucks to watch that one in person.
Big collegiate games tomorrow...