I took a clip from a scene in the Game of Thrones and made a spoof video called "Brooding Jon Snow". Five years later, I received a notice of a copyright claim. I disputed it under the parody exclusion of fair use within the copyright doctrine. My dispute was rejected by the claimant - so YouTube simply notified me that they were going to delete my video. Nice process you have there YouTube.
I'm sort of curious how they measure the success of these events. The number of participating butt cheeks?