Very interesting. Can you verify if your check-in pattern follows the power law? My hunch is that it would. There are a lot of relatively small movements punctuated by sparse long movements on the map. That indicative of a power law relationship.
http://www.ipatrix.com Patrix
@Semantic Overload: Yeah, unless we are George Clooney from Up in the Air, most of our movements are going to be local.