Apologies for the delay. Here's the summary of the pointers to various papers and resources that I received regarding the subject. Jim ---- The paper "Graph Theoretical Dimensions of Informal Organizations" by David Krackhardt Watts, Duncan J. (1999) Small Worlds, Princeton University Press Watts D., Strogatz S., "Collective dynamics of small world networks," Nature, 4 June 1998, 393:440-442 Strogatz S. (applied math dept. Cornell), "Exploring complex networks," Nature, 8 March 2001, 410:268-276 J. Kleinberg. "Navigation in a small world." Nature 406:845 (24 August 2000). http://www.cs.cornell.edu/home/kleinber/nat00.pdf Two people doing good workin this area are: 1. Warren Sack, SIMS, Cal-Berkeley 2. Quentin Gad Jones, HCI (or some similar name), New Jersey Inst of Technology. The thesis by Brian Butler at CMU, [log in to unmask] [the 2nd half of this book] David S. Kaufer & Kathleen M. Carley, 1993, Communication at a Distance: The Effect of Print on Socio-Cultural Organization and Change, Hillsdale, NJ: Lawrence Erlbaum Associates. Kathleen M. Carley, 1996, "Communicating New Ideas: The Potential Impact of Information and Telecommunication Technology" Technology in Society, 18(2): 219-230. Kathleen Carley, 1995, "Communication Technologies and Their Effect on Cultural Homogeneity, Consensus, and the Diffusion of New Ideas." Sociological Perspectives , 38(4): 547-571. David Kaufer & Kathleen Carley, 1994, "Some Concepts and Axioms about Communication: Proximate and at a Distance." Written Communication, 11(1): 8-42. Kathleen M. Carley, forthcoming, "Smart Agents and Organizations of the Future" The Handbook of New Media. Edited by Leah Lievrouw & Sonia Livingstone, Ch. 12.