YouTube was fined $170 million for collecting data on child users.
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American pop singer Ariana Grande joined YouTube at 13 years old.
The first video was uploaded to YouTube.
Google announced that it had acquired YouTube for $1.65 billion.
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.
The video for Psy's Gangnam Style reached two billion views on YouTube.
