Casey Neistat uploaded his first-ever YouTube video.
However, he didn’t make his first vlog until March 25, 2013.
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Ariana Grande released her 'Thank U Next' music video.
The 7-year old Ryan of 'Ryan Toysreview' was announced as the year's highest-paid YouTube star earning $22 million.
YouTube was fined $170 million for collecting data on child users.
American pop singer Ariana Grande joined YouTube at 13 years old.
The vice president of Google, Susan Wojcicki, became the CEO of YouTube.
