In partnership with the OpenNet Initiative (particularly Ron Deibert, Nart Villeneuve, and the fabulous Citizen Lab crew), Richard Rogers and Govcom have developed a cool visual of how online censorship works in Iran. The net result of a link analysis the team performed was the identification of 30 sites found to be blocked that we had not known to be blocked previously.
Expect more in the way of visualizations — like the global map of filtering online — out of ONI, the CL, and partners over the next year-plus.
You may find the most comprehensive details about iranian’s internet filtering system at http://www.no-filter.com. The site is in persian language, of course but the english translation will become available soon.