Here's an update to the Facebook NFL fandom map:
Super-big version:
http://cdn.bleacherreport.net/social_assets/nfl/FB_NFL_Fandom.jpgSome things have changed! For example, the Seahawks have conquered Alaska. And take a look at where the Jets are #1- or don't.
One thing that is bad about this map is that the Cowboys and Giants are almost the same color, which is especially a problem since there are so many random counties of that color strewn across the country. It's
probably a safe bet to say that Osceola, FL is Giants territory and everything else is Cowboys... but would have been better map design to make the Cowboys silver instead. Broncos/Bears has a similar issue, too, and the Broncos/Chiefs boundary is not the most clear.
Also, this map is pretty solid evidence for the Los Angeles Raiders, methinks.