On boy, I finally get to learn what IIRC and GWIS means Unless we are talking about Crisco Which would also be interesting I guess
There are a few watch-specific abbreviations (e.g. DON), but most are generic internet forum lingo (OP, etc.), and Google is helpful for the latter.
NM would be "near mint" Often meaning the watch is well used, but polished back (and beyond) its original condition
Weird, because the scam catcher guy usually ends his titles with it. Also people will use it when sold... So I don't think any of those work
No Message. Used at the end of a, hopefully, self explanatory post title. Saves the reader opening the post to find nothing more. Cheers.
And for clarity, NOS means that I am lying but would still appreciate selling my watch for a lot of profit.