How citizen journalism can break a story

On Monday May 16 Blottr, a citizen and collaborative journalism site, broke the story about a bomb alert in London.   As virtualeconomics.co.uk reported, the news was first tweeted early in the morning by one user who noted that the bomb squad was inspecting a suitcase and some others who tweeted that the area around Trafalgar Square had been closed as the police was carrying out a controlled...