Iran is facing a media revolution through blogs, social networking sites and mobile phone technology.

Ideas and pictures are reaching people across the globe every day in a matter of seconds.

But Iran has faced a media revolution before.

Across the country in the late 1970s, families and friends would sit together to listen to, read and share subversive material.

Then, it was in the form of cassettes, pamphlets and whispers behind closed doors that spread the message of the Islamic Revolution quickly and effectively across the country and beyond.

Old and new revolutionaries explore how the two movements compare. Show less