It's Merely A Formality, Sir

Sirs,

 have you remarked on the broad range of addressing styles used in the forums? A careful analysis reveals that the prime, underlying factor is the difference in rating (what I refer to as the rating deference) between the two protagonists - or the age difference - whichever is the greater. This is best illustrated using two well-known chess.com members: R.G and 'Mr. Billium, Sir'

If there's a positive deference between you and the member you're having a discussion with, use Table 1 to select the appropriate form of address.

           Table 1: Positive Deference

If, however, your discussion is with a member with a negative deference, then Table 2 indicates the proper form of address.

           Table 2: Negative Deference

With a little practice, those awkward faux pas can become a thing of the past, and we can get back to playing chess.

Thank you kindly for your attention.

A fine lesson in etiquette. Something lacking in online venues.