The main research focus of the HP Information Dynamics Laboratory is on the relation between the local actions and the global behavior of large distributed systems. They explore distributed knowledge, social organizations, and novel economic mechanisms, a
extisp.icio.us text gives you a random textual scattering of a user's tags, sized according to the number of times that they've used each of them, and leaves you to draw your own insights from the overlapping entrails.
For an upcoming documentary by Benedikt Bjarnason, RhNav - Rhizome Navigation was used to create animated visualizations of large genealogy data sets...