I was hoping someone could please help me. I wouldn't say I'm a prolific abuser, but I'm merely trying to help my videos along by commenting a few times on each one. No more than 20/30 comments per video. Up until now there hasn't been a problem. I always drip feed them (1 or 2, maximum 5 in any 24 hour period). I have about 10 verified YT accounts, each account has several users/channels attached within so that the comments always look like they are genuine. Lately, YouTube has been picking out videos and deleting all the comments from them. When I retry to post new manual comments, within 48 hours those comments are deleted again. It seems as if a bot comes along to my video every 48 hours and clears it of any comments. I've tried tricking it by using a different IP - doesn't work. I've tried deleting all cookies for google and YT, doesn't work. Even today I tried a completely brand new account I purchased, brand new user all created from a totally new IP. The single comment I made from that account was also deleted. Please, can someone please tell me what is going on and how I can fix this? I'm pretty sure it has deleted real comments too. I'm tearing my hair out, it's as if I cannot get comments on my videos anymore.