The Barbarian Group has just launched the new website Be The Mayor, which shows you how many checkins away you are from becoming the mayor of a venue on Foursquare. This should be a valuable tool to help win ongoing mayorship battles.
Have you ever engaged in a Foursquare mayorship rivalry? Is some other jerk the mayor of your favorite local bar? Have you ever wondered, sometimes at great length, how can you beat that guy?