A youtube comment bomb is a personally typed message towards the uploaders audience showcasing the users chops as a musician. It was invented by Mike Taylor in 2020 to boost his youtube channel music page. Real artists are hurting and they need a way to promote their music. Comment bombs are generally for the heavy metal genre. Mike has comment bombed famous youtubers such as Logan Paul, Pewdiepie, and Mr. Beast. All artists are welcome to comment bomb other channels for a free promo but it's not a copy and paste type deal. You gotta thoroughly believe in what you are doing.