For example, lets say toi posté a video of toi doing a cover of a song, but not many people viewed it. You'd chercher and find a video of a different person doing a cover of the same song, commentaire saying something like 'Wow, great cover! :) I did a cover of this song too, toi should check it out! :)' Basically what I'm saying is that toi should find a way to advertise, but without spamming. Once I saw someone on YouTube commentaire on a really populaire users page, it said, 'hi every2 u shuld check my vids'. Yeah, I looked at that persons profil and saw that that were doing that to a lot of YouTubers, and they got a lot of hate, so it'd probably be a good idea to annoncer in a different way, as long as it relates somehow to the video you're commenting on. I hope this might've helped a bit. :)