Marketing by interrupting people isn't cost-effective anymore. You can't afford to seek out people and send them unwanted marketing messages, in large groups, and hope that some will send you money.
Instead, the future belongs to the marketers who establish a foundation and process where interested people can market to each other. Ignite consumer networks and then get out of the way and let them talk.
Source: Unleashing the Ideavirus, Pages: 15
Contributed by: ~C4Chaos