I as well deliver pizzas, and because of that, I always tip at least 5 dollars at restaurants, more if i got drinks, etc and the bill is high. I tip my hair cutter person 6 bucks because the bill is 14 and I just give a 20 and say keep it. They are grateful for that.

As a pizza delivery driver, let me tell you we DO NOT get the delivery charge that is put on your bill. Well technically we get 15 cents out of the 2 bucks. I got 95 cents per delivery before gas shot up, and now I get 1.10 after the instituted the delivery charge. That is supposed to pay for wear and tear AND gas and mileage. We like to see a minimum of 3 dollars tip on a delivery, and at least 10 percent on order above 30 dollars. and if you are far away form your store in which you get delivery, please tip more because it takes us much longer to get there and back. I HATE it when I delivery to a person 15 minutes away one way for a 2 dollar tip or less. That's 30 minutes of my shift taken away for one delivery and a measly 2 dollars. Also, if you order on the web and leave a shitty tip online, more than likely your order will be taken with 1 or 2 other orders and yours will go last, because those that tip better on an online tip, are obviously going to get their pizza first.