Iranians protesting presidential election use Internet to mobilize and take action . Twitter used to give graphic accounts of protests to a worldwide audience . Now it's just another tool for the government to control what people see, say or do online. People do n't like to use landlines or mobile phones for fear of their calls being traced .
Iranians protesting presidential election use Internet to mobilize and take action . Twitter used to give graphic accounts of protests to a worldwide audience . Social networking sites offer the world a unique voice : free and unfiltered . People do n't like to use landlines or mobile phones for fear of their calls being traced .