Clay Shirky - "Here Comes Everybody"

The transactional cost of gathering a group of people together has gotten very low thanks to the Internet and mobile phones. Thanks to technology, there's virtually no cost involved with getting people together, to exchange information, and act in support or opposition of a particular common interest.

Increasingly, media is not just a source of information.   It is a source of coordinating action.  New media makes the process easier.

Clay  Shirky's Site