Thumbnails are like an album cover or movie poster, it's the first insight into what the video is going to be for viewers and having control over that is INCREDIBLY important to content. I'm not even GOOD at them and I understand that. @TeamYouTube
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Well things run so smoothly there that I can see why they need to mess with random things to not get bored /s
Thanks. Twitter will use this to make your timeline better. UndoUndo
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