There is also a problem with messaging even after the bill has been paid due to unclear standards of tipping. I have a friend here in Seattle, who likes to con

There is also a problem with messaging even after the bill has been paid due to unclear standards of tipping. I have a friend here in Seattle, who likes to consider himself a generous tipper. As such a 20% tip is for truly horrible service. 25-30 is standard and 50% is common enough for good service. I do think this good for the servers - but they have no clue that they sucked (I imagine) when they get a 20% tip. Unless I stiff them on my ½ of the bill :) And while he may be extreme, diversity in the minimum/maximum range for tips means the messaging about performance is muddled.