I have a very simple rule and stick to it 100%. I give a gift and they either say thank you or say nothing ... from that day onward, the ones who say nothing never again receive anything from me while those who have manners and say thank you continue to receive. Hard-hearted? Possibly. But, I'm quite satisfied with my way of doing it and will continue to be so. My family knows my thoughts and feelings but get upset when the "thank you" folks receive gifts and the ones who just can't seem to get the idea, don't. Tough!