I appreciate and practice good manners. Please and thank you, mam and sir, and such.
In the south... manners are taught to children in school, along with respect. When I moved back to the midwest, I found a significant difference. My sister got detention for saying yes mam to her teacher - the teacher thought she was being sarcastic!
People tend towards a greater rudeness online than I think they would in real life, possibly because it can be so impersonal. I and other here still have feelings, however. Yes, that's right... behind this screen is a thinking feeling person - not some robot...