Just got this from our bar manager - with a thanks.
Pretty close. It is also really close to what the inverse should be.
http://www.digitalmusicnews.com/permalink/2014/01/06/sound-guy
I see these as common sense tips, but maybe that's because I play on both sides of the issue. The article assumes, I think to some extent, that all sound guys are at least good. As a musician I had the unfortunate opportunity to work with a nice, but completely clueless sound clerk at one of the more prestigious venues local to me. They exist. It happens.
I hate dealing with "The Chip," but follow the same advice given in article and it tends to work. And then there are the theater guys! They make "The Chip" seem like a sweetheart.
I'm not sure about the sound guy being the most important component of the show. Maybe in some cases. When running sound, I appreciate working with great musicians as it makes my job so much easier; however, when the source sucks even a good sound guy can polish a turd only so much. Of course, the sound guy gets blamed. So maybe he is the most important component.
Regardless of the people you must work with, the point is to be polite, prepared and to trust the engineer's ears (until given reason to think otherwise).