Thanks for reaching out. We constantly validate the likes/dislikes on a video and only show the count we believe to be valid. Here's more info: https://goo.gl/TM6pTM . Hope this helps clarify.
@TeamYouTube why is the likes different my video likes gets to 30 then drops to 7 then when more people like it gets back up then the next day it goes down again these are both on the same daypic.twitter.com/9uhju7cfW6
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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