A social software wiki page on design patterns for social software, categorised under trust and identity, collaboration, and communications. Click through twice to get to a longer list of patterns. Output from social software course.
S. Whittaker, L. Terveen, W. Hill, and L. Cherny. From Usenet to CoWebs - Interacting with Social Information Spaces, Springer, London, Computer-Supported Cooperative Work.(2003)
M. Riedl, and R. Amant. AAMAS '03: Proceedings of the second international joint conference on Autonomous agents and multiagent systems, page 361--368. New York, NY, USA, ACM Press, (2003)
D. Liben-Nowell, and J. Kleinberg. Proceedings of the twelfth international conference on Information and knowledge management - CIKM \textquotesingle03, ACM Press, (2003)