[madmmac]

I hold doors open for people all the time. Around here, they "usually" do say Thanks or Thank You.

If they don't say anything, I sometimes say, "You're welcome." and then some will say Thank You, some will just look confused.

Other times I say, after they pass through the door, "Excuse me." and hold out my hand like I am looking for a tip. They usually look kind of confused and I say, "A simple thanks would be sufficient, but I will accept money."

It's easy to be rude to rude people.