Update: The text of this post has been updated to better reflect that Warner Bros. was the group required to provided disclosure, while the YouTubers involved were not (and some, such as PewDiePie, actually did so anyway in their video descriptions).
A while ago, several popular YouTubers made videos about the game Middle-earth: Shadow of Mordor. What many of them failed to disclose, however, was that producer Warner Bros. paid them to do so—and Warner Bros. said nothing about it either. Because they got paid, the YouTubers had to adhere to some rules: they couldn't say anything negative about the game or Warner Bros., they had to link to the game's website, and they had to verbally encourage their viewers to actually click on that link. These videos garnered over 5.5 million views, with over 3.7 million coming from PewDiePie alone, but Warner Bros.' failure to disclose the sponsorship of YouTubers got the company in trouble with the Federal Trade Commission. Fortunately for the producer, both parties have reached a settlement now.
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