The 7-year old Ryan of “Ryan Toysreview” was announced as the year’s highest-paid YouTube star earning $22 million.
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A shooting took place at YouTube's headquarters in San Bruno, California.
YouTube Live had the largest viewed broadcast ever, with guest artists performing from San Francisco and Tokyo.
The video for Psy's Gangnam Style reached two billion views on YouTube.
Google announced that it had acquired YouTube for $1.65 billion.
American pop singer Ariana Grande joined YouTube at 13 years old.
