Digital books and music are often different from their physical counterparts in that consumers buy licences to a work, revocable under an ongoing contract, rather than their own copies.

Facebook draws from the public and public-interest sphere, a simultaneously bold and modest step towards acknowledging that our new networked technologies deeply affect our lives in ways not always captured or best shaped by the typical template of consumer and seller.

Citizens identify with something larger than themselves - if one's country is attacked, it can feel like a personal attack in a way that a fellow bank customer's account theft does not feel like a personal invasion.

Jonathan Zittrain Quotes