The one thing that worries me is that Youtube is very popular for kids and children and they tend to replay the same videos that have characters like superheros

The one thing that worries me is that Youtube is very popular for kids and children and they tend to replay the same videos that have characters like superheros or pokemon, many times I've seen parents give kids their Ipad, etc. and then let them open up youtube. Its also why children toy review videos are one of the most viewed on Youtube based on socialblade.com because kids have a lot of time and tend to rewatch favourite videos.