The choice of the name www.youtube.com led to problems for a similarly named website, www.utube.com. The site's owner, Universal Tube & Rollform Equipment, filed a lawsuit against YouTube in November 2006 after being regularly overloaded by people looking for YouTube. Universal Tube has since changed the name of its website to www.utubeonline.com.[33][34] In October 2006, Google Inc. announced that it had acquired YouTube for $1.65 billion in Google stock,[35][36] and the deal was finalized on November 13, 2006.[37][38]
In May 2013, creation of live streams was opened to verified users with at least 1,000 subscribers; in August of that year the number was reduced to 100 subscribers,[106] and in December the limit was removed.[107] In February 2017, live streaming was introduced to the official YouTube mobile app. Live streaming via mobile was initially restricted to users with at least 10,000 subscribers,[108] but as of mid-2017 it has been reduced to 100 subscribers.[109] Live streams can be up to 4K resolution at 60 fps, and also support 360° video.[110] In February 2017, a live streaming feature called Super Chat was introduced, which allows viewers to donate between $1 and $500 to have their comment highlighted.[111]

At the time of uploading a video, YouTube users are shown a message asking them not to violate copyright laws.[313] Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a DMCA takedown notice pursuant to the terms of the Online Copyright Infringement Liability Limitation Act. Any successful complaint about copyright infringement results in a YouTube copyright strike. Three successful complaints for copyright infringement against a user account will result in the account and all of its uploaded videos being deleted.[314][315] Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material.[316][317][318] Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works".[319]


YouTube has focused on developing online personalities such as video game player PewDiePie, music video specialist Smosh and style guru Michelle Phan. Driving much of the traffic to YouTube, analysts say, are multichannel networks such as Fullscreen, Maker Studios, SonyBMG and Whistle Sports. Google has bought stakes in multichannel networks such as Vevo and Machinima, analysts say, to ensure their content stays on its website.

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