News a la minute

We were traveling in England this weekend and while watching the BBC news we experienced the growing importance of consumer generated content. The news had an item on the evacuation of several Tesco shops in Britain. However the BBC didn't know a great deal about what was going on. Viewers were invited to email what they had seen at the Tesco shops. Within 20 minutes the newsreaders could report on details of 5 Tesco shops, including time, reasons for evacuation, what happened to the staff and pictures.
Prior to BBC journalists viewers delivered the news. The newsreaders were reading the viewer reports from the laptops on their desks, apparently without further checking the facts. The news was really brought to you as it developed, and not by a BBC journalist at the spot but by the "consumers".
Although the strength of consumer generated content is clearly demonstrated it also points at a risk. Does opening the door for live consumer input not jeopardise the quality of the BBC brand? When facts are relayed without control to consumers this might influence the status, credibility and value of the BBC brand?
By the way it appears now that the closure of 14 stores and evacuation of hundred of thousands of customers was a reaction to a day of action of an animal rights group.