Remember people, the practice of tipping the help is so that their employer can charge less for whatever they are providing. The tip means the employer, often a restaurant, charges less for the food and makes paying a fair wage for the waiter at the option of the waiter.
Tipping is an unfair system. And before I hear any crap about it making the service better, I've been to places where you never tip, and the service is just as good.