A plane hit a building in New York. I saw it on the evening news. The evening news saw it on YouTube. Right in the middle of the broadcast, the anchors cut to a YouTube video of the tragic event. The audience is making the news these days. User-generated content is far from new, from America's Funniest Home Videos (or sassiest kitties, or whatever) to fan-submitted song parodies on Howard Stern's show. And for decades, letters to the editor have filled a lot of column inches with readers' own words.
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