Foreign media are still officially barred from covering unauthorized demonstrations.
With many foreign reporters now forced to leave the country, the protestors inside Iran have become the world's eyes and ears on the ground, filming protests on their cellphones and distributing the footage on Web sites such as Twitter, Facebook and YouTube.
Facebook users who speak Persian [Farsi] helped create a Persian-language translation of the site, which was launched Friday. Google also added Farsi to its Google Translations tool today.
"We feel that launching Persian is particularly important now, given ongoing events in Iran," the company said in a release.
Reuters and Associated Press contributed to this report.