I'm doing research for a future column (inspired mostly by tipping threads here on CH). I'm interested in your personal experience, either as a diner, or as a server.
What percentage do you usually tip (diners)?
What percentage tip do you usually receive (servers)?
Are there really diners (in North America) who NEVER tip?
Do you tip the same percentage, regardless of quality of service?
Diners, have you personally experienced poor service when you are part of a group where a stated percentage will be added to the bill for groups of X or more?
Servers, are visitors from other countries consistently bad tippers?
I'm trying to separate fact from urban myth. Please keep your answers short and to the point, AND CIVIL. CH has been a great resource for me in the past, but if this thread goes south (as tipping threads are wont to do), the thread will be locked in a heartbeat, and I won't get my info. Thanks in advance for your help.