I searched and couldn't find a thread. I've always been curious how people tip and wanted to know how my fellow MR members tipped 1) Do you tip based on the total pre-tax or post-tax? 1a) Do you always tip a certain percentage or base it off how good/bad the server is?1 2) If there is a delivery charge, do you tip based off the pre-delivery charge total or post-delivery charge total? 3) How do you tip masseuses? 4) How do you tip your barber? 5) How do you tip the taxi driver? 6) If product A is discounted say 50%, do you tip based off the original or discounted total? 7) Do you tip anyone else (maid, gardener, USPS/UPS/Fedex/DHL drivers, doormen, manicurist, pedicurist, newspaper boy, babysitter/nanny, valet attendants, personal trainer, dog walker, etc) and if you do, how many %?