The title of his latest post is:
Picking a fight with Clay Shirky
Clay Shirky makes several points in the comments section of this article:
Was What Happened in Tunisia a Twitter Revolution?
This article and comments are worth a read in themselves...
Well worth a few minutes of your time!
While we're at it, this is a quick one on Zizi Papacharissi and The Virtual Sphere:
This is the video that Matthew and Josh found: