From the New York Times:
On bitterwaitress.com, the most popular page is an annotated database of people who give bad tips (defined on the site as “any gratuity under 17 percent for service which one’s peers would judge as adequate or better”)
If that’s the determining factor, count me in as a proud “bad tipper”. Seventeen percent is absolutely ridiculous… the Almighty himself only expects ten. It seems strange that as service has gotten worse and worse over the years, expectations of compensation for it have nearly doubled.