Libyans, "in a very brief period of time," took to social media in greater numbers, Iskandar said. "The number of people signing up to Twitter has gone up exponentially in the last 48 hours," he said Thursday. They are showing creativity and bravery, crossing borders to smuggle CDs of photographs or use Internet cafes in Egypt or Algeria.
Facebook pages such as B.R.Q News Network (brq is Arabic for "lightning bolt") have arisen to inform expat Libyans about relatives, coordinate relief efforts and safety information, and send news back and forth.
When the Libyan government blocked the Internet, Libyans learned how to use work-arounds such as "Tweet to Speak Libya," a Google service that let Libyans make ordinary landline calls to special numbers, where their messages were transcribed and tweeted to the world. Savvy Libyan undergrounders used web-radio tech to create "Free Benghazi Radio."
A clever Twitter user named Arasmus assembled a "mash-up map" of Libya showing the location of anonymous tweeters. Users could click on icons for each region and get information about police activity and protests.
"Twitter is playing a huge role," Griswold said, "with people getting images of violence out to the outside world. Its main value has been to bear witness."
Shoring up the diaspora media community is the irresistible force of cable TV news: Al-Jazeera, Al-Arabiya, and others that carry news and images once forbidden. Cable news is much-watched throughout the Arab world, including Libya.
"Gadhafi can't hope to control this now," said Iskandar. As soon as an image of oppression leaves Libya, he said, "it circulates worldwide, and within minutes you can see it on Al-Jazeera. When that happens, it's the beginning of the end."
Short of confiscating every satellite dish in Libya, Gadhafi can't do much to block that information. Duella said that when cable TV carried speeches by Gadhafi and his son Seif al-Islam, it might have backfired because "people suddenly saw them for what they really were."
"I call it the first satellite revolution," said Iskandar. "The fact that all this is getting out means that the fortress is crumbling."
Contact staff writer John Timpane at jt@phillynews.com, 215-854-4406, or twitter.com/jtimpane.