To get an idea about how Iranians are using technology to spread dissent check out “Rebellion Network” on the Australian Broadcasting Company’s Mark Corcoran. Click on "Rebellion Network" to watch. It is a 25 minute video that is very worthwhile. It also gives an insight into the Basji militia which has been responsible for the violence against protestors.
It is important that the world consciously watch what is happening in Iran. If you can do nothing more, watch. Keep watching.