I’ve been fascinated with the visual mapping of networks of people ever since I ran across TheyRule.net in 2003. TheyRule is, on the surface, a fun, Flash-based way to see how the powerful and wealthy in America are connected. In their words, TheyRule “aims to provide a glimpse of some of the relationships of the US ruling class. It takes as its focus the boards of some of the most powerful U.S. companies, which share many of the same directors“. This kind of information mapping has come a long way since then (we’ve touched on Fleshmaps, Heatmaps, and Tag-clouds here before), to the extent that if you have a Facebook account, with the click of a button you can activate a variety of visual tools for sorting and viewing your network of friends. Visualiser, for instance, allows you to see how your contacts are connected to each other, and do filtering based on things like sex or relationship status. Facebook Mutual Friend Network Visualization seems to offer fewer sorting tools, but has a simple and attractive interface that shows friends as nodes that you can click on to change the focus of the network. FavMapper lets you explore a map of your friends’ favorite music, movies, and books with interactive animation, and lastly, TouchGraph Facebook Browser displays similar connections from your Facebook account, but does it based on the photos that friends have shared in their accounts.