clipped from: news.cnet.com   

With Iran crisis, Twitter's youth is over

"This is a tool that can help communication in politically volatile situations."
Up to this point, much of the hype about Twitter's use in crises and disasters (as well as political events like elections) has been how quickly it can spread raw eyewitness reports, sort of the ultimate center for participatory "citizen journalism.

In the aftermath of the contested Iranian elections, however, it's been Twitter's potential as a communications medium, rather than simply a source of up-to-the-minute news, that has been front and center. It's usurped Facebook as the social-media tool in the spotlight. The U.S. Department of State even requested that the company reschedule a planned outage so that it would be less likely to disrupt the flow of information coming from Iran.