If they are collecting money at the door, then the musicians should be paid, and that would by that very fact not be an open mic. Why would anyone believe that musicians should pay at the door to sing for them to help the clubs make money selling booze? Mike is right about musicians giving away too much for free and not asking for appropriate compensation. Open mics are basically a scam to avoid paying for the live entertainment provided. I am not entirely opposed to open mics, but this is too much.

Any musician with half a brain should leave that place silent until they realize the error of their ways.