It's one of the big differences between the UK and the US. We tip here, but it's nowhere near as important or widespread, and it is pretty much never where people actually make the money that they live on. So I am interested in the specifics.

How much do you tip for various things, like meals or drinks? What about other things? Does it differ between American regions? Or is it more in the city or in rural areas?

And how about those posters from other parts of the world - what is it like where you are?