under rocks AND in the cheating forum.
Brilliant new players

MM is Millenium Master
QM is Quarter Master
SM is Sadist Master
now here's a chap with his thinking cap on.

RM is Returned Master (inside joke -- get it erik?)
AM is Amplitude Master or Ante Master
PM is also Post Master
I often find that non titled players who have a rating of 2200+, who often defeat the many FMs,NMs.... have very few games in their stats, around 30~100. Every time I see a titled player getting beaten, I check the opponents stats and find that he/she is fresh on the site. Where were these guys hiding before?