Adam Joinson is Senior Lecturer in Information Systems at the University of Bath School of Management His research interests include computer-mediated communication, e-social science, privacy and disinhibition online. He is the author of 'Understanding the Psychology of Internet Behavior' (2003, Palgrave), 'Truth, Lies and Trust on the Internet' (with Monica Whitty, Psychology Press, 2007), and has published over 50 journal articles, book chapters and conference proceedings in the field. Katelyn Y. A. McKenna (Yael Kaynan) is a Senior Lecturer at Ben-Gurion University of the Negev and at The Interdisciplinary Center Herzliya in the Department of Communication. Her research interests are in the areas of relationship cognition, the self, and social identity, particularly in terms of their applicability to Internet interactions. Tom Postmes (PhD, Amsterdam, 1997; MSc, Amsterdam, 1992) is Professor of Communication and Social Psychology at the University of Exeter. His research interests are group processes and communication, focusing in particular on the topics of social influence, the formation of group norms, collective action, intergroup conflict, perceptions of discrimination and oppression. In his research, he has studied online groups and social effects of Computer-Mediated Communication. His work has been published in over 40 journal articles, more than a dozen book chapters and several other publications. His academic achievements received recognition through the award of research fellowships by the Economic and Social Research Council (2003-2006) and the Royal Netherlands Academy of Arts and Sciences (1998-2002). From 2001 to 2003 he was associate editor of the British Journal of Social Psychology. Ulf-Dietrich Reips is an assistant professor in the Department of Psychology, University of Zurich, Switzerland. He received his venia legendi for Psychology in the Faculty for the Science of Information and Cognition at the University of Tubingen, Germany, in 2004, where he also was awarded a Ph.D. in 1997. He holds a M.A. in Psychology from Sonoma State University, USA. Reips' research interests include methods, tools, and techniques of Internet-based research, in particular Internet-based experimenting, e-/i-learning and -teaching, online privacy and self-disclosure, Internet-based data mining and log file analysis, cognition, social psychology, e-health. Reips is founding editor of the International Journal of Internet Science . He has published in both English and German and serves the important role of bridging new findings in Internet-based research between the literatures in these two languages.