Nick Kallen, one of the Twitter Engineers:

Human beings need to understand one another in terms of primordial intimacies because man has no other tools for understanding the solicitations of man. But if the size of the world no is on longer amenable to intimacy technologies, then mankind must invent information technologies that rehumanize the world. Thus the proliferation of social software on the web. The reification of the social graph in Friendster; the Facebook Newsfeed and the Twitter; and the Foursquare all serve this one purpose: to rehumanize an inhumane world.