The vice president of Google, Susan Wojcicki, became the CEO of YouTube.
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Casey Neistat uploaded his first-ever YouTube video.
YouTube was fined $170 million for collecting data on child users.
Google adopted a new logo design.
The 7-year old Ryan of 'Ryan Toysreview' was announced as the year's highest-paid YouTube star earning $22 million.
A shooting took place at YouTube's headquarters in San Bruno, California.
