The Haiti earthquake has launched a tsunami of sympathy, information and aid through social media such as Facebook, Flickr, Skype, YouTube and Twitter.
The lightning worldwide response will likely reinforce what aid workers have known for years: Online media effectively get vital word out, often faster than mainstream media.
"We have big presences on Twitter, Facebook, and of course on our blog," said Tom Foley, chief executive officer of the Southeastern Pennsylvania chapter of the American Red Cross, "and I know that today we've dramatically increased the number of people who check in with us through those sites."
With conventional communications either damaged or down, social media, connected via cell phone or satellite-broadband systems, took up the slack. Land-based phone lines didn't work, but the Web-based phone system Skype did, letting family, friends and news outfits reach survivors in Haiti.