One expansion of danah's def. of social networks. She (and Nicole) talk about them as links between people. But as commonly used in the social network analysis literature, they can also be links between organizations (like Microsoft Research and Berkeley), states (like USA and Saudi Arabia), etc. In other words, the level doesn't have to be interpersonal, although most research is done at the interpersonal level. Barry Wellman Founder, International Network for Social Network Analysis (1977) _______________________________________________________________________ S.D. Clark Professor of Sociology, FRSC NetLab Director Department of Sociology 725 Spadina Avenue, Room 388 University of Toronto Toronto Canada M5S 2J4 twitter:barrywellman http://www.chass.utoronto.ca/~wellman fax:+1-416-978-3963 Updating history: http://chass.utoronto.ca/oldnew/cybertimes.php _______________________________________________________________________