Very interesting post. English is a foreign language to me and I do not talk to others in my country in English. I've learned most of my English-language etiquette from movies and tv shows, seeing how I'm on first name terms with every native English speaker I know in real life. Personally, if someone called me "Ma'am", I would feel respected.

I'm curious, though. Would you still not feel respected if someone younger than you addressed you on a first name basis, but with a respectful tone of voice and choice of words?