#2 trending in the US is some dude who went over a hill on a bike, fell and clearly said the F bomb. How is this trending @TeamYouTubepic.twitter.com/8mIiD3KUyE
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there's no algorithm. if there is it's very f'd up and has external input to promote certain channels/types of content first. wouldn't be surprised if ad companies paid to get videos related to their product on the trending page (disney paying to get ant man vid)