"BY NOW, most people who use computers have heard of the 'open source' movement, even if they are not sure what it is. It is a way of making software (and increasingly, other things as well), which relies on the individual contributions of thousands of programmers. The resulting programs are owned by no one and are free for all to use. The software is copyrighted only to ensure it remains free to use and enhance. In essence, therefore, open source involves two things: putting spare capacity (geeks' surplus time and skill) into economic production; and sharing."

- The Economics of Sharing, The Economist, February 5th, 2005