We Skype/AIM/MSN all days. This compilation may answer most of the “new vocabulary”, like LOL, BRB, GR8 in the chat window.

Here a list off all the most common ones...

Starting from:

0-9

• 1337 — From the word Leet, derived from the word elite
• 2 — too, or to
• 2L8 — Too late
• <3 — love; a sideways heart.
• </3 — hate; a sideways broken heart.
• 4 — for

A

• AFK — Away from keyboard
• AKA — Also known as
• ASAP — As soon as possible
• ATM — At the moment

B

• BBIAB — Be back in a bit
• BBL — Be back later
• BF - Boy friend
• BFN — Bye for now
• Bot — Any type of automated software in chatrooms or games
• BRB — Be right back
• BRT — Be right there
• BS — Backstab / Bullshit
• BSOD — Blue Screen of Death
• BTW — By the way
• Bump — Bring up my post

C

• CTN — Can't Talk Now
• CU — See you (later)
• CYA — See ya OR Cover Your Ass

D

• DND — Do not disturb
• Duffed — Getting Debuffed in a game (mostly a MMORPG)
• DW — Don't Worry.

F

• FAQ — Frequently Asked Question(s)
• Flamer — Someone who makes inflammatory, abusive or directly offensive comments. Similar to, but not quite the same as an Internet Troll
• FTL — For the lose
• FTW — For the win
• FYI — For your information

G

• GF — Great/good fight; or girlfriend
• GFY — Good for you
• GG — Good game, used at or near the conclusion of a gaming match
• GL — Good luck, often used at beginning of a contest
• GLHF — Good luck and have fun
• GJ — Good job
• Gratz — Congratulations
• GTG or G2G — 'Got to go' or 'Good to go'
• GR8 — Great

H

• HF — Have fun
• Haxor or H4x0r (1337) — Hacker
• H8 — Hate

I

• IC -- I see
• IK- I know
• IDC — I don't care
• IDK — I don't know
• ILY— I love you
• IRL — In real life

J

• JAS — Just a second
• JIC' — Just in case
• JK or j/k — Just kidding, or joke
• JP — Junon Polis
• JW — Just wondering

K

• k or kk — OK
• KIT — Keep in touch
• KMA — Kiss my ass
• KOS — Kill on sight
• KS(ing) — Kill-Steal(ing)
• KTHX — OK, thanks

L

• L2P — Learn to play; an admonishment to video game players who are incompetent and/or whine
• L8R — Later (sometimes abbreviated to L8ER); is commonly used in chat rooms and other text based communications as a way of saying good bye.
• Lag — Slang term for slow Internet speeds or high Internet latency; Lag is sometimes due to a server problem, but more frequently due to the connection between client and server. A slow or intermittent connection may often be referred to as laggy
• Lamer — A know-nothing, one who is lame.
• Leecher — A person that is in a party or group but does not actual do anything but sitting or just standing AFK
• Leet — Often spelled as l33t or 1337 in ASCII form. It originally meant elite
• LFG — Looking for group
• LFM — Looking for more
• LMAO, LMFAO, LMMFAO — Laugh my ass off, laugh my fucking ass off, laugh my mother fucking ass off
• lol — Laughing out loud, laugh out loud

M

• MMORPG, MMO — Massive Multi-player Online Role Playing Game
• MMOFPS — Massive Multi-player Online First Person Shooter
• MOTD — Message of the day
• M8 — Mate

N

• NE1 — "Anyone"
• Newbie, noob, or n00b — An inexperienced user of a system or game, or an annoying person.
• NM — (Sometimes written N/M) Not much, Never mind or no message, used on message boards or in e-mails to indicate that everything is already said in the subject line.
• NP — No problem
• NTY — No, Thank You
• NVM, NVMD, or nm — Nevermind, not much

O

• O RLY— Oh really?
• OIC — Oh, I see
• OMG — Oh, my God
• OMW — On my way or Oh my word
• OS — Operating system
• OT — Off topic

P

• P2P — Peer to peer, or pay to play
• Ping — From the popular network monitoring tool, used as a greeting similar to "Are you there?".
• Plz — Please
• PM — Personal message or private message
• PPL — People

Q

• QT — Cutie

R

• RL — Real Life
• Rly — Really (See also: O Rly)
• RO(T)FL — Rolling on (the) floor laughing
• RO(T)FLMAO — Rolling on (the) floor laughing my ass off
• RO(T)Flol — Rolling on (the) floor laughing out loud

S

• sk8/sk8r — skate/skater
• Smiley — Another name for emoticons
• Sry - Sorry
• Soz — Sorry
• SU - Shut up

T

• TBH, TBQH — To be (quite) honest
• TG — That's great / Training Grounds
• TH(N)X, TNX or TX — Thanks
• TOS — Terms of service
• TTYL — Talk to you later (also spelled TTUL, T2UL or T2YL)
• TTYS — Talk to you soon
• TY — Thank you
• TYVM — Thank you very much

U

• U, Ur — You, your, you're

V

• Vlog — Video blog

W

• w00t, w00T or WOOT — First two express exuberance, the latter is a backronym for the term "We Own the Other Team".
• W/ or W/O — With or without
• WB — Welcome back
• WD — Well Done
• W/E — Whatever
• WP — Well Played
• WTB — Want to buy
• WTF — What the fuck
• WTG — Way to go
• WTH — What the hell, What the hack
• WTS — Want to sell
• WTT — Want to trade
• W8 — Wait

Y

• Y — Why
• YA RLY — Yeah Really (invariably preceeded by "O RLY")
• YW — You're welcome.

Z

• ZOMG (sometimes OMGZ)— A variation of OMG (Oh my Gosh/God) used to indicate extreme excitement