Citizen reporters: the tipping point?

The Guardian is carrying an article on the media coverage about the London bombings. Most of the pictures and video footages screened on TV or printed in newspapers originated from commuters' mobile phones, including the harrowing clip inside the tube carriage or the pictures of the “minute after” the bus bomb. The article talks about a tipping point for citizen journalism. News directors from ITV, Sky and the BBC are in agreement.