In a spate of recent statements on the subject, Obama's top advisers have warned the other networks not to follow Fox's lead on any of the stories it reports, lest they discover they have allowed themselves to become the tool of the Republicans.
With my obsessive use of Newsbeat, our real-time traffic tool, I was able to watch and discover that at any given moment during the seven-day period Facebook was responsible for between 25% and up to 60% of the traffic.