IAE In Any Event
BTW By the way
FM Fine Magic
FC Fingers Crossed
FWIW For what it's worth
FYI For Your Information
FUA Frequently Used Acronyms
IITYWTMWYBMAD If I Tell You What This Means Will You Buy Me A Drink?
IAE In any event
IANALI Am Not A Lawyer, also IANA... such as CPA
IMO In my opinion
IMHO In my humble opinion
IMCO In my considered opinion
IOW In other words
LMAO Laughing my *ss off
NRN No Reply Necessary
OTOH On the other hand
PITA Pain in the *ss
ROFL Rolling on floor laughing
ROFLAMO Rolling on floor laughing my *ss off (OK, OK, don't sneer; tiny children may be reading this.)
RSN Real Soon Now [which may be a long time coming]
RTFM Read the Fine(?) manual
SNAFU Situation Normal: All [bleeped] Up
SITD Still in the dark
TANSTAAFL There Ain't No Such Thing As A Free Lunch
TIA Thanks In Advance (also AtDhVaAnNkCsE)
TIC Tongue in cheek
TLA Three Letter Acronym (such as this)
YMMV Your Mileage May Vary
You are visitor #