I wasn't aware they allowed this. It's a horrible idea, but it leads further towards Google's dream of an fully and instantly mutable, impossible to reference,

I wasn't aware they allowed this. It's a horrible idea, but it leads further towards Google's dream of an fully and instantly mutable, impossible to reference, fully personalised internet where no one and everyone could be accountable for the fact that you shared a video with your coworker and he saw a completely different version of it while neither of you is aware of it.