On the cover of Bloomberg reporter Mark Bergen's most recent book, "Like, Comment, Subscribe," it says it will take the reader "Inside YouTube's Chaotic Rise to World Domination." Mr. Bergen, our guest this week, has reported on Google for the past seven years. YouTube was bought by Google in 2014 for $1.6 billion. In the prologue to the book, Bergen reports that more than 2 billion people visit YouTube every month, making it the second most visited search engine on Earth, second only to Google. He adds that YouTube is still dominated by music, gaming, and videos for children.  

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