Where I live the media goes on and on about how The Iranian people is using web technology against its regime - for example Twitter, Youtube, e-mails and also cellular phones, SMS, etc… These technologies are described as giving an upper hand to the people as opposed for example to the revolution which took place 30 years ago.
I think this technology is actually being used against the people. You can not use it without being completely exposed. Anyone using it is being monitored and ironically has his/her social network mapped. Once someone is determined to be an organizer or worth the effort of taking down, he/she can be easily arrested.