And Hyd, whether someone tips or not, a gang of pizza delivery drivers (oh no!) acting out in a vengeful way (like beating up the persons dog or having sex with the persons daughter) because they didnt get $2-10 for delivering a pizza is absurd and asinine. If you actually know people who would act in such a way over something so trivial, and you possess pride for knowing or being such a person - well, you would be someone I would consider the SCUM OF THE EARTH, moreso than anyone who decides not to tip (which, sadly, IS their OPTION, its NOT MANDATORY.) Vengeful/violent people are ignorant people who know no other way to express or deal with their emotions. Their ignorance angers me. Do you not see the utter idiocy that is your above list? Cuz I certainly do...and it makes me weep for society. And it makes me not like you much.