Your service is probably pretty fly if you’ve hit ten million users, and Foursquare as of Monday has become such a service. Foursquare, in case you’re dead, is the darling of the location-based social networking party, and has hither and yon become a great service for both consumers and businesses alike. Now, of course, how many of those ten million are actually using their Foursquare accounts – mine, for instance, exists as little more than an verification email – but any way you slice it, it’s still reason to tip your proverbial hat. Foursquare was even nice enough to do up this slick little animated…