Psy's music video of the song "Gangnam Style" has topped the one billion views mark on YouTube. According to Billboard, the video is the first ever in the history of the Internet to surpass one billion views. Billboard also notes, using YouTube as the source, that the video reached 90 million views on Sept. 1, 345 million on Oct. 1, 622 million on Nov. 1 and 870 million on Dec. 1 before hitting one billion today.

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