Chancesare, whether you're aware of it or not, you've participated in a spontaneous mass audience on the World Wide Web. Someone somewhere decides to share something that catches your interest: a home video, say, of the Indian Ocean " tsunami taking out a beach resort. At first that sort of offering gathers an audience slowly. A few people send a link to friends, but soon the links become part of a positive feedback loop, and before long big media news sites have noticed the file, and the initial cluster of visitors becomes a swarm.
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