"With more than 500 million people now on Facebook, it's inevitable that you'll be friended by someone you know, but with whom you don't want to share your online life. Once you've accepted them as a friend, how do you avoid them without the awkwardness of unfriending them?"
The material in this talk is the basis for his later writing in the book Here Comes Everybody. | "In this prescient 2005 talk, Clay Shirky shows how closed groups and companies will give way to looser networks where small contributors have big roles and fluid cooperation replaces rigid planning."
"Researchers at Yahoo analyzed tweets after the Chilean earthquake earlier this year and found evidence that the Twitter community works like a "collaborative filter," questioning reports that turn out to be fake and confirming those that are true."