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).
... to-date; it paid homage to previous forms, and also reflected a sense of adventure and a continuous quest for the "musical unknown"; more often than not, exploration and a ...