The Internet & Democracy project has begun analyzing developments over the last year in the Iranian blogosphere and has a pair of intriguing hypotheses to explain changes to its April 2008 map. From the Internet & Democracy blog:
A number of recent international anecdotes indicate increased online activism by governments. A perfect example of this increased ’state-engagement’ in cyberspace is found in Hamid Tehrani’s recent post about the Islamic Revolutionary Guards Corps’ plan to recruit 10,000 Basij bloggers. This may help explain some changes we’ve seen in the Iranian blogosphere, and is a good opportunity share an updated Iranian blogosphere map created by John Kelly at Morningside Analytics, Berkman’s partner on these foreign language blog studies.