Something very cool, via the excellent Cubs blog Wrigleyville23: The United Countries of Baseball, by strange maps (click on the picture for a larger view), depicting the relative sizes of baseball's fan bases:
I draw two conclusions from this: 1) The Devil Rays need to be contracted or moved to Helena, Montana; and 2) no wonder White Sox fans are so pugnacious: their tiny fan base is surrounded by the enemy, so they pick fights or risk becoming completely irrelevant. White Sox suck.
Incidentally, did you know the Angels have 35,000 season-ticket holders? In contrast, Fenway Park barely has 36,000 seats, and that's only during night games. 35,000 season tickets! Do southern Californians live in a different world?