ADN Any day now
AFAIK As Far As I Know
AFK Away From Key Board
AKA
Also Known As
ASAP As Soon As Possible
A/S/L Age/Sex/Location
BAK
Back At Keyboard
BBIAB Be back in a bit
BBL Be Back Later
BCNU
Be Seeing You
BEG Big evil grin
BFD Big f***ing deal
B4N Bye For
Now
BRB Be Right Back
BTDT Been there, done that
BTW By The Way
F2F
Face To Face
FWIW For What It's Worth
FYA For Your Amusement
FYI
For Your Information
GFY Good For You
GGBB Gotta Go Bye Bye
GL
Good Luck
GMTA Great Minds Think Alike
G2G Got To Go
GTGB Got
To Go Bye
ILU Love You
IDK I Don't Know
IM Instant Message
IMHO
In My Humble Opinion
IMO In My Opinion
INALB I'm Not A Lawyer But
IOH
I'm Outta Here
IOW In Other Words
IRL In Real Life
ITS I Told
You So
KIT Keep In Touch
LOL Laughing Out Loud
LTL Lets Talk Later
LTNC
Long Time No Chat
LTNS Long Time No See
LU Looking Up
MAYB
Maybe
NM Nothing Much
NP No Problem
NRN No Reply Necessary
NYO
Need Your Opinion
PDQ Pretty Darn Quick
PLS Please
PMFJI Pardon
Me For Jumping In
POS Parents Over Shoulder Change Subject
POV Point Of View
ROTFL
Rolling On The Floor Laughing
RSN Real Soon Now
RTFM Read The "Fascinating" Manual
TIA
Thanks In Advance
TMI Too Much Info
TTFN Ta Ta For Now
TTYL
Talk To You Later
TTYS Talk To You Soon
TU Thank You
TX Thanks
TY
Thank You
TYVM Thank You Very Much
YMMV Your Mileage May Vary (different luck)
UKW
You Know Who
U You
U2 You Too
UW You Wish
WB
Welcome Back