qısa-qısa yekə-yekə

AFAIC - As far as I'm concerned
AFAIK - As far as I know
AFK - Away from keyboard
AKA - Also Known As
BRB - Be right back
BTDT - Been there, done that
BTW - By the way
BUAG - Butt-ugly ASCII graphic
C/C - Comments and criticism
EOM - End of message
FAQ - Frequently Asked Question.
FTFY - Fixed that for you; often accompanied by a correction
FTW - For the win
FWIW - For what it's worth
FYI - For your information
GUI - Graphical user interface
HTH - Hope this helps
IANAL - I am not a lawyer
IIRC - If I recall correctly
IMHO - In my humble opinion
IMNSHO - In my not so humble opinion
IMO - In my opinion
IOW - In other words
l33t or 1337 - From "elite". This has become a term used to describe the informal communication of Internet gaming. L33t speak is easily identified by the substitution of number and other characters for regular letters; e.g., hackers becomes h4XX0rz.
LFG - Looking for group, usually used in MMORPGs
LMAO - Laughing my butt off
LOL - Laughing out loud
MMORPG - Massive, multiplayer, online role-playing game, such as World of Warcraft or Star Wars Galaxies
MOTAS - Member of the appropriate sex
MOTOS - Member of the opposite sex
MOTSS - Member of the same sex
NG - Newsgroup
n00b - From "newbie", meaning a newcomer not yet familiar with the rules
NT - No text; usually in the subject line of a message with no body
OMG - Oh my God
OTOH - On the other hand
PWN - Usage of the term "own", as in "I PWNed you!"
QQ - Cry more, noob (representation of eyes crying, often found in MMORPGs)
RL - Real Life, as opposed to the Internet
ROFL - Rolling on the floor laughing
ROFLMAO - Rolling on the floor laughing my butt off
RTFM - Read The Fine Manual. This may be interpreted as: "You have asked a question which would best be answered by consulting the manual (or FAQ, or other help files), a copy of which should be in your possession. The question you have asked is clearly answered in the manual and you are wasting time asking people to read it to you." It's good netiquette to mail this type of answer to another user rather than post it in public messages.
SO Significant other, used to refer to someone's romantic partner without making any assumptions about gender or legal status
TLA - Three letter acronym
TTFN - Ta ta for now
TTYL - Talk to you later
W/E - Whatever
w00t - An expression of joy
WFN - Wrong forum, noob
WTF - What the heck
WYSIWYG - What you see is what you get, pronounced as "wizzywig".
YMMH - You might mean here
YMMV - Your mileage may vary