Here is a small MindMap about the Text "Social Netzworks Spread Defiance Online". I just use the most important information from the text.
It's a Twitter Revolution
Some peaceful mass march photos was on Twitter.
Twitter wants to turn off there service
Twitter term for Iran is #IranElection
Dedicated Twitter account for Moussavi supporters (6000 followers)
Persiankiwi hase more than 15000 followers
Twitter was attack, but the company had no connection to the Accoount
President Mahmoud Ahmadinejad trying to limit Internet access and communications. (Connected with Twitter, becouse if there are no internet access noboady can use that).
Iranians blogging, posting to Facebook and coordination their protest on Twitter. (Connected with Twitter, becouse if there are no internet access noboady can use that).