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).
... War
February 23 - For $10 million the United States gains control of the Panama Canal Zone.
March 3 - Kaiser Wilhelm II of Germany becomes the first ...