There have been several letters regarding tipping recently.
I tip as much as 25-30 percent for really good service, normally leave 20 percent and if service is lacking, 10-15 percent.
However, there have been a couple of times I have left nothing and written a note on the credit card slip that the service was horrible. If you have to ask for something four or five times, meals are cold when served, incorrect orders, people are more interested in other employees than in customers and ignore tables where people are not drinking alcohol, those servers need to look at themselves for the reason they are receiving poor tips.
Salt Lake City