Commonly Used Fb Acronyms while chatting.

AAMOF - As A Matter Of Fact  
AFAIK - As Far As I Know
AFK - Away From Keyboard  
ASAP - As Soon As Possible  
BBL - Be Back Later  
BRB - Be Right Back
BTW - By The Way  
CU - see you
CUL8R - see you Later  
EZ - Easy  
F2F - Face to Face  
FAQ - Frequently Asked Questions  
FWIW - For What It’s Worth  
FYI - For Your Information  
GG - Good Game  
GTG - Got To Go  
HAND - Have A Nice Day  
HTH - Hope That Helps
IAC - In Any Case
IIRC - If I Remember Correctly  
J/K - Just Kidding
IMHO - In My Humble Opinion
IMNSHO - In My Not-So-Humble Opinion  
IMO - In My Opinion  
IOW - In Other Words
IRL - In Real Life
LOL - Laughing Out Loud
NRN - No Reply Necessary
OMG - Oh My God  
OTOH - On The Other Hand
R & D - Research and Development
ROFL - Rolling On the Floor Laughing
ROFLMAO - Rolling On the Floor Laughing My Ass Off
THX - Thanks
TIA - Thanks In Advance
TTYL8R - Talk To You Later
WTF - What The F**k

Cool-Speak

You just know that’s not true. The following are some quickly-typed versions of common words, favoured by the kidz.
2M - tomorrow
2nite - tonight
B4 - Before
cos - because
j/k - Just Kidding
K - ok
kewl - cool
l8rz - see you later
m8 - Mate
n/a - Not Applicable
w/ - With
w/o - Without