It's precisely that shift, from sitting down in front of a computer screen to standing up on the streets, that has taken authorities by surprise. Obama showed how it was done in the United States during his 2008 campaign. It wasn't enough to "like" his Facebook page or visit his home page; all sorts of mechanisms were set up to get volunteers raising money and ringing doorbells. Much the same thing is now being done in Egypt by the Khaled Said site, the April 6 Movement, and other groups that move from the conceptual to the concrete, showing people not only how to click a mouse, but also how to use Coca-Cola to wash away the sting of tear gas. It was all in place even before the Tunisian revolt. But the results have surprised everyone. Suddenly people who had never seen a protest were pouring into the streets, not only hotblooded young men and angry workers, but women, mothers, girls--and many discovered that they were leaders, too.