[tptacek]

You can use tipping that way, but you're not if you just tip 15%, which is all you're expected to tip. At 15%, you are, as I said before, sharing a cost with the owner of the restaurant that would otherwise be reflected directly in the cost of items on the menu, as it is in Australia.

[selmnoo]

Why not simply readjust the food price so that I don't have to go through the trouble of stopping to calculate 15%?

[megablast]

The US is one of the cheapest places to eat, so maybe tipping is the correct way to go.

Especially compared to Australia.