America's news media have come under heavy criticism for the way they reported the trial of Casey Anthony, a woman accused of murdering her daughter. Before the verdict Ms Anthony suffered an electronic lynching from news organisations and amateur sleuths on Twitter and Facebook. The jury, having heard all the evidence in detail, this week acquitted her. Britain's traditional news media are supposedly bound by strict laws that curtail their reporting of active criminal cases. But they frequently test the limits. The Daily Mirror and Sun are being prosecuted for contempt of court, over their reporting of a murder case in which suspicion briefly and wrongly fell on the victim's landlord.
But you can't regulate Facebook and Twitter, comes the response. Look at what happened recently when masses of Twitter users defied a court injunction against naming a prominent footballer accused of adultery. However, others might say that you can regulate any form of communication, if you have the will to do so: ask the Chinese. Even without calling for draconian censorship of online chatter, it could still be argued that mainstream news organisations should set the standards for public discourse, and should gather and report the news in an