I like what Joe Trippi has to say. If you are not familiar, Trippi was Howard Dean’s campaign manager. He is one of the few in politics to understand what the Cluetrain Manifesto is getting at. I am just finishing his book “The Revolution Will Not Be Televised: Democracy, The Internet, and the Overthrow of Everything.” and would recommend it. The book starts with some biography on Trippi, a lot of the story of Dean’s campaign, and it ends well with what he thinks the future has in store. Read the intro here.
You can also find him being interviewed by Mitch Kapor at Of By and For. I thought this discussion was a little more partisan in nature, but still worth listening to.