Twitter is the only technology which allows large groups of people to "behave as one for a moment," according to one of the co-founders of the micro-blogging site.
Biz Stone told Good Morning Britain about the first time he realised Twitter had become a phenomenon - a man tweeted a recommendation for another bar after he had become fed up with the noise in the pub he was sitting in.
"He sent out a tweet recommending another pub and he sent that to his followers. They thought it was a good idea and so they sent it and so forth. In the eight minutes it took him to walk to that pub it had completely filled to capacity and there was a line around the block!"