Acronyms, Definitions, and Imodicons
If you have any others or discover another one, let us know!

O:-) Angel
:-# Braces
   
=:) bug
:-> Coy
   
>:-> Devilish grin
:(
:-( Frown (sad)
OżO Here's looking at you
   
:-{ Moustache
:^) Pointy nose
   
>:-o~ Razzberry
:)
:-) Smile (happy)
   
:o
:-o Surprised
:-)~ Tongue sticking out.
;)
;-) Winking
   
<BG> Big Grin
<g> Grin (smile)
<S> Sigh
<VBG> Very Big Grin
<VEG> Very Evil Grin
   
AAMOF As a matter of fact
AFAIC As far as I'm concerned
AFAICT As far as I can tell
AFAIK As far as I know
AFK Away from keyboard
AFK Away From Keyboard
AIUI As I understand it
B4 Before
BAK Back at keyboard
BAK Back
BBIAB Be back in a bit
BBL Be back later
BBS Be Back Soon/Shortly
BCNU By seeing you
BITMT But in the meantime
BRB Be Right Back
BSF But seriously folks
BTDT Been there, done that
BTW By the way
BWQ Buzz word quotient
CUL See you later
CUL8R See you later (variation: CUL)
CWOT Complete waste of time
CYA See ya
DD Dear Daughter
DH Dear Husband
DYJHIW Don't you just hate it when
DYK Do you know
EMFJI Excuse me for jumping in
EOF End of file
ETLA Extended three-letter acronym
F2F Face to Face
FAQ Frequently asked question
FBOW For Better or Worse
FLAMING To attack or insult another on the Internet
FOC Free of charge
FOCL Falling Off Chair Laughing
FUBAR F***** up beyond all recognition
FUD Fear, Uncertainty and Doubt
FWIW For what it's worth
FYA For your amusement
FYE For your entertainment
FYI For your information
GA Go Ahead
GD&R Grinning, ducking & running
GFETE Grinning from ear to ear
GFI Go For It!
GIGO Garbage in garbage out
GMTA Great Minds Think Alike
GR&D Grinning, running & ducking
HHOK Ha Ha only kidding
HTH Hope that helps
IAC In any case
IAE In Any Event
IIRC If I recall correctly
IMCO In my considered opinion
IME In my experience
IMHO In My Humble Opinion
IMNSHO In my not so humble opinion
IMO In My Opinion
IOTTMCO Intuitively obvious to the most casual observer
IOW In other words
ISP Internet service provider
ISTM It seems to me
ISTR I seem to recall
ITRO In the region of
IYKWIM If you know what I mean
IYSWIM If you see what I mean
J/K Just Kidding
JAM Just a minute
JIC Just in case
KISS Keep it simple, Stupid
L8R Later
LMAO Laughing My Asterisk Off
LOL Laughs out loud
LOL Laugh out loud
LOL Laughing Out Loud
LTNS Long Time No See (variation: LTNT for Talk)
MIL Mother-in-law
MorF Male or Female
MTCW My Two Cents Worth
NBD No big deal
NIMBY Not in my back yard
NRN No reply necessary
OBTW Oh, by the way
OEM Original equipment manufacturer
OIC Oh I see
OOBE Out of Body Experience
OTOH On The Other Hand
OTT Over the top
PD Public domain
PEBKAC Problem exists between keyboard and chair
PFM Pure F**kin' Magic
PMFJI Pardon me for jumping in
ROFL Rolling On Floor Laughing (variation: ROTFL or OTF for On The Floor)
ROTFL Rolls on the floor laughing
ROTFLOL Roll on the floor/laugh out loud
RSN Real Soon Now [which may be a long time coming]
RTFAQ Read the FAQ
RTFM Read the f**king manual [or message]
RTM Read the manual [or message]
SITD Still in the dark
SNAFU Situation normal, all f**ked up
SNR Signal-to-noise ratio
SO Significant other
SODDI Some Other Dude Did It
TAFN That's All For Now
TAM Tenner a month (account fee).
TANSTAAFL There Ain't No Such Thing As A Free Lunch
THX Thanks (variation: TX,TNX)
TIA Thanks in advance
TIC Tongue in cheek
TLA Three Letter Acronym (such as this)
TMI Too Much Information
TMK To my knowledge
TNX Thanks (variation: THX, TNX)
TPTB The Powers that Be
TSWC Tell Someone Who Cares
TTBOMK To The Best Of My Knowledge
TTFN Ta Ta for now
TTYL Talk to you later
TWIMC To whom it may concern
TX Thanks (variation: THX, TNX)
TY Thank You
VI Village Idiot
WAD Working As Designed
WB Welcome Back
WIDLIO When In Doubt, Leave It Out
WILBI Wouldn't it be lovely if
WIT Word smith in Training
WRT With Regard To
WTG Way To Go
WWW Wide World Web
WYSITWIRL What You See Is Totally Worthless In Real Life
WYSIWYG What You See Is What You Get
YGIAGAM Your Guess Is As Good As Mine
YMMV Your mileage may vary