The unique character of the revolt in Iran has been the power of the fast SMS/Twitter tools and the younger age group that used it. Those who grew up using their thumb as a main tool of communication also know that they are breaking new grounds. There are no rules for this political game, and the modes of expression and their strategic models are written while hitting the ground.
The Iranian crowds are living through the "largest increase in expressive capability in human history," as defined by Clay Shirky, author of Here Comes Everybody.
Iranian youth know that the authorities can try to follow them, but they also know that fast and furious is the way to go. The authorities will always be a step behind.
The greatest effect of the whole phenomenon is that Iran has gained a new face. Instead of relating to Ahmadinejad as the only face of Iran, we now see a multitude of younger people. We have human rights movements that will make a difference for the future. The USA and Israel, which have often held a one-dimensional view of Iran, will have a new challenging set of questions to answer.