Check out these interactive maps. How come I didn’t find this sooner? Now make each link carry its meaning (ie. the nature of the relationship between two companies) and this will be the stuff of my dreams.
Updates
01/29/05: Finding Mavens in Usenet, Graph del.icio.us related tags.
12/23/01: The Big Ten (on media concentration).
07/20/01: TheyRule [update: was a Flash app, dead now], maps of board members (thanks Jason).
07/13/01: TouchGraph, or Inxight meets TheBrain (Inxight got eventually absorbed by BusinessObjects then SAP).
05/10/01: NameBase does social network diagrams through proximity searches.
02/09/01: see also CompanyClique.