Vizster is a cool infoviz system

Vzster provides a visualization of such services, providing an interactive sociogram for exploring the links between network members. In addition to visualizing "friendship" linkages, Vizster supports a range of exploratory search features, providing visualization of the rich profile data characteristic of these services, and which traditional sociograms [3] are not designed to communicate. The current application visualizes a "snowball" sample of the popular friendster [4] social networking service, encompassing over 1.5 million profiles and the linkages between them, roughly a quarter of active friendster users...