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).
... thumb, a person holding it in her hand can accelerate the gyroscope to incredibly high revs by following a circular wrist motion with the device. Modern devices come with ...