***** To join INSNA, visit http://www.sfu.ca/~insna/ ***** I would note that the past 2 decades of research in Human-computer interaction and in communication has shown repeatedly that (1) email is not a substitute for other forms of communication and (2) email networks are social networks,but (3) the network collected via email differs from the network collected via questionnairs, observation, etc. Our group has made some contributions to this extended literature: Here are some articles of ours on email and social networks. Kathleen Carley with Kira Wendt, 1991, Electronic Mail and Scientific Communication: A Study of the Soar Extended Research Group. Knowledge: Creation, Diffusion, Utilization , 12(4): 406-440. and on the impact of email on social networks and email is changing the nature of communication Leah A. Lievrouw & Kathleen Carley, 1990, Changing Patterns of Communication Among Scientists In an Era of Telescience. Technology in Society , 12(4): 457-477. and the social networks Kathleen M. Carley, 1996, Communicating New Ideas: The Potential Impact of Information and Telecommunication Technology Technology in Society, 18(2): 219-230. _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.sfu.ca/~insna/). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.