4chan users seize Internet's power for mass disruptions

Corporations spend millions of dollars trying to understand and control traffic on the Internet, and more often than not they don't succeed. 4chan has mastered the feat for free.

Created seven years ago by a 15-year-old, 4chan is a vast web of anonymous, uncensored message boards. No one's in charge, but the site's users have managed to pull off some of the highest-profile collective actions in the history of the Internet. The 4chan "hive mind" has been credited with -- or blamed for, depending on your perspective -- urging tween idol Justin Bieber to head for North Korea as part of his upcoming world tour (as part of an online poll allowing fans to select which country he should visit), spreading a story that Steve Jobs had a heart attack (which caused Apple's stock to fall precipitously) and starting a rumor that there was a bomb at New York's JFK airport (triggering an evacuation).

How 4chan -- a site built for fun by a teenager that barely ekes out a profit from online ads -- manages over and over again to outwit the systems that multibillion-dollar corporations use to make money on the Internet is one of the great mysteries of the capricious online world.