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).
... term for someone with absolute governmental power, from the Greek language turannos. In Classical Antiquity[?] it did not always have inherently negative implications, it ...