I asked a group of YouTubers, “What entices you to want to subscribe to a YouTube channel or comment on one of their videos?” Hopefully some of their thoughts can help you determine how to best craft your videos so they facilitate as much engagement and subscribers as possible.

YOUTUBERS IN THIS VIDEO
http://www.youtube.com/wolfprincess027
http://www.youtube.com/schmovies
http://www.youtube.com/wwwDUingITcom
http://www.youtube.com/riograndeforever