Social software is any software that supports group communications. The dynamics of social software are significantly different from traditional interactions.
Social Software and the Politics of Groups, Clay Shirky, First published March 9, 2003 on the "Networks, Economics, and Culture" mailing list (http://www.shirky.com/writings/group_politics).
... today, herbal medicine[?], miracle cures, and diet and fitness regimes are considered a form of Quackery by medical experts, these criticise thet they are great at taking ...