For only the second time since PEJ began measuring social media in January 2009, the same story was the No. 1 topic on blogs, Twitter and YouTube.
Social media users last week responded in huge numbers to the aftermath of the catastrophic earthquake in Japan, including the growing concern about damaged nuclear reactors. For the week of March 14-18, a full 64% of blog links, 32% of Twitter news links and the top 20 YouTube news videos were about that subject, according to the New Media Index from the Pew Research Center's Project for Excellence in Journalism.
The only other time that one topic led the news on blogs, Twitter and YouTube was June 15-19, 2009, when unrest following the disputed elections in Iran-also known as the "Twitter Revolution"-was the No. 1 story.
Read the full report In Social Media it’s All About Japan on the Pew Research Center's Project for Excellence in Journalism Web site.