I decided to look a little further into the history and demographics of Twitter after our discussion in class yesterday. Many of the points and opinions that you made in class are reinforced here. The Pew Internet and American Life Project may be of interest to some of you.
The link below provides information from a Pew study that includes the demographics of Twitter users:
http://www.socialmediatoday.com/SMC/78505
Wikipedia has a detailed overview of Twitter that includes the history of its development and usage:
http://en.wikipedia.org/wiki/Twitter
New York Times article on Twitter and its users (25.August 2009):
http://www.nytimes.com/2009/08/26/technology/internet/26twitter.html?_r=1