You are probably up to date with the political situation in Iran: after the presidential election held on 12 June 2009, protests were held against alleged electoral fraud and in support of opposition candidate Mir-Hossein Mousavi. In response to these, Iranian authorities have closed universities in Tehran, blocked web sites, blocked cell phone transmissions and text messaging. More on the political situation in Iran you can find here.
The team that administrate Tor, the well know anonymity network, has published some stats that show an increased activity by the Iranian users in the days after the contested election.
The first graph shows the number of requests from new Tor clients coming from Iranian IP addresses. You can see an increase from an average of about 150+ per day to almost 1000 per day.
The second graph estimates of the total number of Tor users in Iran.
[Via Measuring Tor and Iran]
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[...] few days ago, I wrote about the political tension in Iran that resulted in blocked web sites, blocked cell phone [...]