The internet is now such a pervasive part of so many people’s lives that blocking certain sites, or simply turning the whole thing off – as leaders in Bahrain, Egypt and elsewhere have recently tried to do – can backfire completely, angering protesters further and, from a dictator’s point of view, making matters worse. “The end state of connectivity,” [Shirky] argues, “is that it provides citizens with increased power.”

The road to that end state won’t be smooth. But the compensatory efforts of the authorities to harness the internet for their own ends will never fully compensate. Either they must allow dissenters to organise online, or – by cutting off a resource that’s crucial to their daily lives – provoke them to greater fury.