(CNN) — Iranian protesters have found a new outlet to mobilize and take action. The presidential election has proved how much opposition supporters can demand change without necessarily taking to the streets. Just give them a computer and an Internet connection and watch what they can do.

Supporters of defeated Iranian presidential candidate Mir Hossein Mousavi protest in Tehran on June 13, 2009.

more photos » At the height of the protests and disorder in Tehran on Saturday and Sunday, Twitter was used to give graphic accounts to a worldwide audience – even if they were a maximum of 140 characters.

Tweets from “Change for Iran” were among several that offered real time updates: “…my friend saying more than 100 students arrested, I can’t confirm this but the numbers are high. bastards just attacked us for no reason, I lost count of how much tear gas they launched at us! …we have now some students with urgent need of medical attention I’m calling out to all ppl who can come here don’t leave us.”

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