ABC News suggest conspiracy theorists have mental illnesses

A man standing on a street corner with a sign reading "the lizard people rule you all," or, "my neighbors are spying on me for the government" isn't likely to get many supporters.

But give that man a Web site template, or let him produce some slick videos on YouTube and, lo and behold, he may have thousands of people across the world supporting him.

Such is the story of several extraordinarily popular conspiracy theorists and theories online today.

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