I was trawling around scoop.it and I've just stumbled across this BBC documentary from 2010. It focuses on how aspects of citizen journalism - video in particular - are affecting the ability of those in power to control their messages. It also looks its impact on the media.
If, like me, you missed it at the time it's a useful bit of background for anyone taking look at the impact of what's been dubbed citizen journalism.
On a day when my son is looking at video clips as part of his exam revision, it's also a powerful reminder of the role Youtube plays in education, information and entertainment.