Music Lover
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Tipping is actually not determined by compensation. It is based on personalized service and tradition. Thus it is not necessary to try to determine someone's compensation in order to determine the tip.
I don't care about tradition. I will grudgingly tip wait staff who are unfairly paid, but people who earn a good living don't get tips from me.