The video for Psy’s Gangnam Style reached two billion views on YouTube.
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A shooting took place at YouTube's headquarters in San Bruno, California.
The first video was uploaded to YouTube.
Psy's music video for 'Gangnam Style' surpassed one billion views on YouTube, becoming the first video to do so in the website's history.
Psy's 'Gangnam Style' music video became the most viewed video on YouTube, passing 800 million views.
The vice president of Google, Susan Wojcicki, became the CEO of YouTube.