This is old, but we hadn't seen it: Some magazine or something ranked all 32 NFL teams on their fan loyalty. We like little lists like this, but we're kind of Tourettic.
The best fans in the NFL? According to these guys, it's the Dawg Pound crazies of the Cleveland Browns, with their "Den-nis! North-cutt!" chants and strangely named absorbent cloth. Our Buzzsaw comes in 30th out of 32nd, avoiding last place only because the imaginary fan base has nothing to root for.
The worst fans in the NFL? These folks say it's the Oakland Raiders fans, probably because they had a special category for "maiming."
NFL Fan Loyalty Rankings [BizJournals]