This map of Facebook friendships looks not surprisingly like a map of the Earth as seen from space at night.

Are you utilizing this vast network of more than 1/3 of the most wired, affluent and educated people on the planet to promote your business, consulting practice, art form or cause? You should be.

http://www.economist.com/blogs/dailychart/2010/12/data_visualisation_1?fsrc=scn%2Ffb%2Fwl%2Far%2Ffacebookfriends.