I have liked this review article: Personal Mediated Communication and the Concept of Community in Theory and Practice<http://www.tandfonline.com/doi/abs/10.1080/23808985.2004.11679039> James E. Katz, Ronald E. Rice, Sophia Acord, Kiku Dasgupta & Kalpana David Annals of the International Communication Association <http://www.tandfonline.com/toc/rica20/28/1> Vol. 28 , Iss. 1,2004 cheers, andee