Nothing to do with flying, it's about common courtesy, if you land at a remote field which is obviously private and the person that owns/runs it is there, take five minutes to get out and introduce yourself and have a chat about the days flying conditions perhaps, maybe even thank them for letting you land then go on about your way. It's just good manners showing the person that you're aware he/she has put the effort into mowing, sowing, patching, repairing equipment and all the other chores that go into keeping a strip in a usable condition for no financial reward but for the benefit of GA
Just my 2 cents.