text: should we address acquaintances with salutation (mr. ms. mrs. etc.) or just their first names? acquaintances as in people we know through our social life or business / occupational situation. ofcourse this does not include very old people (who deserve all the respect we can we can give) but excludes old people we know very personally (neighbour, friend, co-worker etc.) close acquaintances by their 1st name others by mr, mrs etc