I round up, give a dollar for every ten of my total, and add $1. I used to be a delivery driver.
I see the same people in this thread bitching about people too lazy to get jobs. Want a better living? Work harder, get a better job. Then, when people try harder, Fuck You, you chose this job. Why shouldn't they stay home and try to get on gov't assistance, right? YOU are paying their wages, YOU ordered a service, and in this country it's customary for YOU to tip. Don't want to? Go pick your food up yourself.
Tim, if ANYTHING I would think you recognize that tipping after you receive your food in a prompt manner with a friendly driver would earn more than the pitiful shit you leave. Also, after being a delivery driver, if you order from the same place where you tip next to nothing, I wouldn't recommend eating the food.