Curious if anyone else has noticed this. My friend and I thought it was "just me" until we realized it was happening to both of us. I also tested by trying to leave the same comment twice on a brand new video, and it was removed instantly both times.
I thought this was just a bug/error at first, but I've noticed it happen to me now on several different videos from multiple uploaders (so I know it's not just the uploader deleting my comment). I leave a comment, wait a few minutes, refresh the page, and it's gone.
I'm either on a black list for YT now, and/or they're blocking any comment that references "clown world". Probably other naughty words and phrases they're also blocking.
Fucking Jew Tube.