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Chad Hurley, Steve Chen and Jawed Karim found YouTube, they were PayPal employees. YouTube is a video-sharing website where users can upload, share and view content. "www.youtube.com" is activated on Monday, February 14, 2005.
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The first YouTube video, titled Me at the zoo, was uploaded on April 23 in 2005, and shows Jawed Karim at the San Diego Zoo.
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In 2006, Google purchased YouTube for US$1.65 billion in a companystock, and it was completed on November 13. At that time it was Google's second-largest acquisition.
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On July 23 in 2007 and November 28 in 2007, CNN and YouTube produced and transmited a presidential debate and there were questions that were submitted by YouTube.
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In 2008, YouTube reached an agreement with MGM, Lions Gate Entertainment, and CBS, allowing the companies to post full-length films and television episodes on the site. It created competition with websites like Hulu, NBC, Fox, and Disney.
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In 2009 YouTube registered the domain "www.youtube-nocookie.com" for videos embedded on United States federal government websites.
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YouTube launched a version of "Shows" available to UK viewers, offering around 4,000 full-length shows from more than 60 partners.
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In March 2010 YouTube began free streaming of certain content. This was the first worldwide free online broadcast of a sporting event.
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In November 2011, the Google+ was integrated with YouTube and Chrome, allowing YouTube videos to be viewed fro the Google+ interface.
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In late 2011 and early 2012, YouTube launched over 100 "premium" or "original" channels. It costed $100 million.
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In March 2013, the number of unique users visiting YouTube every month reached 1 billion.
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In November 2013, they documented that the landing page of the original channels became a 404 error page, so original channels such as SourceFed and Crash Course could become successful.
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YouTube Red is launched in October 2015.
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Youtube celebrated on February 14, 2017 its 13th anniversary.
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YouTube TV is launched in 2017.
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In August 2017 YouTube owned its new logo for the first time.