Instead of (or in addition to) using youtube, etc. for superchats, consider using xmrchat.com. It comes with global payment reach, zero percent charges on the tip receiver, and sub-a-dollar-cent cheap transaction fees for the tip sender. As usual, tips can have messages attached to them. See this timestamp for an example of seeing xmrchat in action: https://www.youtube.com/watch?v=1aJYIwVn7Gk&t=4216