AFAIK As Far As I Know

AFK Away From Keyboard

ASCII American Standard Code for Information Interchange

ATM At The Moment (or Asynchronous Transfer Mode, or possibly Automatic Teller Machine).

bbias Be Back In A Second (also see brb)

brb Be right back (also see bbias)

BFN Bye For Now

BBS Bulletin Board Systems

BRB Be Right Back

BTDTGTS Been There, Done That, Got the T-Shirt

BTW By The Way

BUG A problem in software

CLI Command Line Interface

CFV Call For Voting

CU  See You

CUA Commonly Used Acronym(s) OR Common User Access

cul8er  See You Later

cul8er allig8or  See You Later Alligator

DARFC Ducking And Running For Cover

DETLA Double Extended Three Letter Abbreviation

DH Dear Husband (also Dear Hubby or Duh Hubby)

DIY Do It Yourself

EAK Eating At Keyboard

FAQ Frequently Asked Questions

FLA Four/Five Letter Abbreviation

FOFL Falling On Floor Laughing

FTP File Transfer Protocol

FTF Face-To-Face (as in person)

FUD (spreading) Fear, Uncertainty, and Disinformation

FWIW For What it's Worth

FYI For Your Information

GAL Get A Life

GG Gota Go

GIF  Graphics Interchange Format (a picture)

GR&D Grinning, Running, & Ducking (alternatively GD&R)

GUI Graphical User Interface

HAGD Have A Great Day

HAND Have A Nice Day

HTH Hope This Helps

HTML HyperText Markup Language

HTTP HyperText Transfer Protocol

IAE In Any Event

ICBW I Could Be Wrong (sometimes It Could Be Worse)

IIRC If I Recall Correctly

IMAO In My Arrogrant Opinion

IMHO In My Humble Opinion

IMNSHO In My Not So Humble Opinion

IMO In My Opinion

IOW In Other Words

IP  Internet Protocol

IRL In Real Life

ISDN It Still Does Nothing

ISWYM I See What You Mean

ISTR I Seem To Recall

jk  Just Kidding (also known as j/k or j.k.)

k OK

l8er  Later

MHBFY My Heart Bleeds For You

MHOTY My Hat's Off To You

MUD Multi-User Domain/Dungeon

newbie  A user on the Internet that is either new to the Internet or new to a part of the Internet. (for example an Internet newbie, or a chat newbie).

NRN No Reply Necessary

NYCTMI Now You Come To Mention It

OIC Oh, I See!

OOI Out Of Interest

OOTB Out Of The Box (brand new)

OTOH On The Other Hand

OTTH On The Third Hand

PCMCIA People Can't Memorize Computer Industry Acronyms

PDA Public Display of Affection

PDQ Pretty Darn Quick

pic a picture

PMFJI Pardon Me For Jumping In

PKB Pot, Kettle Black (as in "Look at the pot calling the kettle black.")

FAQ Frequently Asked Questions (and Answers.)

ROFL Rolling on the Floor Laughing

ROLF Basically ROFL, but laugh and floor are switched, meaning an unfunny, offensive, corny, stupid joke.

ROTFL Rolling On The Floor Laughing

RFC Request For Comment

RSN Real Soon Now (can be meant sarcastically)

shareware  Type of software that usually may be used for a certain amount of days (for example 30 days) before you must buy and/or register it. Usually contains less features than the registered version. Always read the license of software to make sure you know the conditions and other important information about the software.

SFAIAA So Far As I Am Aware

SCNR Sorry, Could Not Resist

SITD Still In The Dark

sniper  Primarely used in multiplayer action games. Sometimes the same as camper. A sniper is a player (usually in an action game) standing on the same spot, hidden, and from there shooting other players. Like campers usually not appreciated by other players (depending on game).

TANSTAAFL There Ain't No Such Thing As A Free Lunch

TIA Thanks In Advance

TIC Tongue In Cheek

trojan horse  A trojan horse is a software application meant to harm your system and/or open a back door (for example: allowing people to control your PC through a network, or the Internet) in your system without you knowing it. Usually spread through E-mail, IRC or Messengers.

TTFN Ta ta For Now

TTYL Talk To You Later

TWIMC To Whom It May Concern

TYVM Thank You Very Much

UCE Unsolicited Commerical E-mail

URL Universal Resource Locator (sometimes called Uniform Resource Locator)

WWW World-Wide Web

WYSIAYG What You See Is All You Get

WYSIWYG What You See Is What You Get

YHBT You Have Been Trolled

YKYHBxTLW You Know You Have Been x Too Long When (eg, YKYHBPDTLW - You Know You Have Been Playing Something Too Long When...)

YMMV Your Mileage May Vary