We've posted visualizations from Facebook's Data Science Team before, but I think it's safe to say that their newest effort--a county-level map of NFL fandom across the U.S.--is their most admirable yet. Based on the team page Likes and locations of over 35 million account holders, it's probably the most accurate, precise geography of sports fandom ever.
Deadspin has a nice run-down of the take-aways, to which I would add only one question: Does anyone know what that blob of Steelers fans is doing in southern Oregon?
This confirms what I already knew. Everyone hates the Jets!
This confirms what I already knew. Facebook is for stalking.
(Type 0.72) = We are still just cleaver monkeys!
That yellow blob is pure Troy Polamalu. =)