Twitter is, according to much of the mainstream media, an unbelievable, inaccurate and poorly-sourced account of events, best suited to reporting what tweeters had for breakfast rather than providing genuine news.

And yes, indeed, that's frequently correct. This morning there's a Twitter rumour that one of Gaddafi's sons has died from injuries sustained in an attack several days ago. But like all Twitter rumours on major events these days, the demands for sources and confirmation now circulate as much as the retweeting of the rumour itself, as always happens with rumours that sound too good to be true. A week before the Tunisian dictator Ben Ali fled, Twitter had lit up with false claims he'd bailed out. It took several hours for it to die out.