tips for tipping. Not a good idea. It should be specified that these are rules for tipping in the US. Other countries have their own customs for tipping (some even including the tip in your bill). Some forms of gratuity are not even an exchange of money.
all the free redbox codes you could want in one place. and i know first hand a lot of these work. just remember you can't use the same code twice on the same card, but if you have more than one debit/credit card... you will seriously never have to pay for a redbox again.