Inside Pornhub
From the article:"I often encountered videos that were uploaded again and again, no matter how many times I removed them. One day, a woman emailed me, calmly explained that her ex-boyfriend had uploaded a video of them having sex, and asked me to remove it. I deleted the clip. Later that week, it was re-uploaded. The woman wrote again, I removed it, and this continued for months; I must have pulled the same video down a dozen times. This was before I had ever heard the term “revenge porn.”Requests like this were not uncommon. Once, a woman wrote to say there was a video of her on Tube8 that showed her being sexually assaulted after someone spiked her drink at a party. The video had tens of thousands of views, so I had to review it before making the call to remove it. In the clip, the woman is clearly high, laughing and head lolling, having sex on a bed surrounded by fully dressed people holding drinks and watching as colored lights flashed and music blared in the background. I took it down, but it was uploaded again repeatedly in the following months. Each time, the mortified woman flagged it, and each time, I removed it; both of us were aware that there was nothing we could do to stop the clip from resurfacing."I have read the same thing from Facebook content moderators.  They got so frustrated at having to watch and take down the same videos over and over.This seems to be such a simple problem to solve:  record a hash of the video file, don't allow uploading it again.  That would probably get rid of most re-posting.It could be bypassed by modifying the file slightly, but the hashing could also get more sophisticated.  At some point, an ex-boyfriend is not likely to want to keep modifying a video to piss off his ex.