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8.
A person on Youtube (or likeminded websites) who submits a comment for the sole intention of getting "thumbs up".

Many of these people copy other thumbs up comments to get their attention fix.
John: Justin Biebers dick is as small as the dislike bar, thumbs up if you're listening to this in 2011

Jane: God John, you're such a thumbs up whore, the worst of all attention whores.
by Biofresh December 27, 2011
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