Hillary Clinton, Barack Obama, and John McCain all have expensive, highly sophisticated PR machines designed to define their images in the mind of the average American voter, but in the age of YouTube, some of the most effective - or damaging - propaganda is created and spread across the internet by amateurs. Fair Game's Matthew Perpetua joins Faith Salie to tell us about some of the best - and worst - fan-made viral campaign videos currently making the rounds on the web. Videos Barack Obama-sistable Hillary for you and me Here comes McCain again

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