... I make a lot of videos about twitter marketing and every single day I get spam comments on my videos that are promoting different social media sites. Of course they also upvote these comments using fake profile's. Now I have to delete all of these comments everyday and block the users. I wanted to ask you guys: Is there a way to make it forbidden to post a comment on my video that includes a specific word? For example when someone wants to make a comment like "I got 10k free followers using tweetincrease", is it possible that youtube doesn't let him post the comment just because he uses the word "tweetincrease". Thanks for the answers!