A few days ago on 100% mag on the M6 channel (French tv), they talked about this sign at a French café in Nice. The Guardian wrote a nice article in English about the sign read it here.
Recently I went to the doctor's office and the receptionist refused to help me before I said "Bonjour". I swear I said it, but she kept repeating it like I didn't. Manners, really are still important in today's world.
