The use of social media to disseminate information, unmask official cover-ups and lobby for progressive change is an indelible part of how we understand the “Arab spring”. The Tahrir Square demonstrations of 2011 were organised by Facebook invitations going viral and led to the overthrow of the tyrant Mubarak. But when does digital activism shade into internet trolling and flaming? When Hurricane Sandy hit New York, photoshopped images flew around Twitter, spreading confusion. And when the internet spread news of a Russian nuclear power plant accident in Kursk, it was only disbelieved when TV reporters actually showed themselves going there. See
http://www.meta-activism.org/2010/06/from-our-book-destructive-digital-activism/