Statistical Map

http://jeffreydonenfeld.com/blog/2009/01/the-facebook-reconnection-project-calling-everyone/

Statistical maps are maps that communicate relative distance scaling properties, or more simply that represent distances that are relative to properties other than physical distance. For example, the distance displayed in this map could be referring to the closeness/proximity of some belief, custom, idea, etc for nearby countries or cities. So then, an example map would be the closeness of countries displayed on the statistical map would be representative of the closeness/similarity the countries share in their values and beliefs of something. The above image is a statistical map of the distance/similarity of the social media network of Facebook. This is a statistical map because distance/closeness between objects which in this case is Facebook users, is being measured, but the distance that's being measured is not physical distance, but closeness in interaction on this social network.