I recently talked to a friend who works for a state public broadcasting regime. I have no way to validate this, so take it for the second-hand anecdote that it is: He told me that during their most recent pledge drive, Bill Moyers' show was the only one they got NO comments about. People always call in and say "I'll give you money if you promise to keep X on," or "I'm not giving you a dime until you take Y off the air!", but nobody said a damn thing about his show. It literally doesn't register.