| Term | Meaning |
| ADN | Any day now |
| AFAIK | As far as I know |
| AFK | Away from keyboard |
| ARE | Acronym-rich environment |
| A/S/L | Age/sex/location |
| AYT? | Are you there? |
| B4N | Bye for now |
| BAK | Back at the keyboard |
| BBIAB | Be back in a bit |
| BBL | Be back later |
| BEG | Big evil grin |
| BF | Boyfriend |
| BFN | Bye for now |
| BG | Big grin |
| BOTEC | Back-of-the-envelope calculation |
| BRB | Be right back |
| BTA | But then again... |
| BTDT | Been there, done that |
| BTW | By the way |
| BWTHDIK | But what the heck do I know? |
| CU | See you |
| CUL | See you later |
| CUL8R | See you later |
| CYA | See ya |
| CYO | See you online |
| DIKU | Do I know you? |
| DQMOT | Don't quote me on this |
| DTS | Don't think so |
| EG | Evil grin |
| EMFBI | Excuse me for butting in |
| EOM | End of message |
| EOT | End of thread (meaning: end of discussion) |
| F2F | Face to face |
| FAQ | Frequently asked question(s) |
| FISH | First in, still here |
| FLA | Four-letter acronym |
| FMTYEWTK | Far more than you ever wanted to know |
| FOMCL | Falling off my chair laughing |
| FUD | Fear, Uncertainty, and Doubt |
| FWIW | For what it's worth |
| FYI | For your information |
| G | Grin |
| GA | Go Ahead |
| GAL | Get A Life |
| GD&R | Grinning, ducking, and running |
| GF | Girlfriend |
| GFETE | Grinning from ear to ear |
| GFUG | Good for you, girl! |
| GIWIST | Gee, I wish I'd said that |
| GMTA | Great minds think alike |
| GOL | Giggling out loud |
| GTG | Got to go |
| G2G | Got to go (same as GTG) |
| GTRM | Going to read mail |
| HTH | Hope this helps (or: Hope that helped) |
| IAC | In any case |
| IANAL | I am not a lawyer (but) |
| IC | I see |
| IHA | I hate acronyms |
| ICCL | I could care less |
| IIRC | If I recall/remember/recollect correctly |
| ILU | I love/like you |
| IM | Instant message |
| IMHO | In my humble opinion |
| IMNSHO | In my not so humble opinion |
| IMO | In my opinion |
| IOW | In other words |
| IRL | In real life (that is, when not chatting) |
| IYSWIM | If you see what I mean |
| JIC | Just in case |
| J/K | Just kidding |
| KOTC | Kiss on the cheek |
| KWIM | Know what I mean |
| L8R | Later |
| LDR | Long-distance relationship |
| LOL | Laughing out loud |
| LMAO | Laughing my ass off |
| LTM | Laugh to myself |
| LTNS | Long time no see |
| LTR | Long-term relationship |
| LULAB | Love you like a brother |
| LULAS | Love you like a sister |
| MorF | Male or female |
| MOSS | Member of the same sex |
| MOTOS | Member of the opposite sex |
| MUSM | Miss you so much |
| MYOB | Mind your own business |
| NP | No problem (or Nintendo Power the magazine) |
| NRN | No response necessary |
| OIC | Oh, I see |
| OLL | Online love |
| OMG | Oh my God/gosh |
| OTF | Off the floor |
| OTOH | On the other hand |
| OTTOMH | Off the top of my head |
| PANS | Pretty awesome new stuff |
| PDA | Public display of affection |
| PITA | Pain in the a** |
| PMFJIB | Pardon me for jumping in but... |
| ::POOF:: | Goodbye (leaving the room) |
| POS | Parent over shoulder |
| PU | That stinks! |
| RE: | In regards to |
| RL | Real life (not when on the net) |
| ROTFL | Rolling on the floor laughing |
| ROTFLMAO | Rolling on the floor laughing my a** off |
| ROTFLMAOWPIMP | Rolling on the floor laughing my a** off while peeing in my pants |
| ROTFLMBO | Rolling on the floor laughing my butt off |
| RPG | Role-playing game |
| RSN | Real soon now |
| SA | So Anyways... |
| SO | Significant other |
| SOHF | Sense of humor failure |
| SOMY | Sick of me yet |
| STW | Search the Web |
| SWAG | Stupid wild-a** guess |
| TAFN | That's all for now |
| TFH | Thread from hell (a discussion that just won't die and is often irrelevant to the purpose of the forum or group) |
| TGIF | Thank God it's Friday |
| THX | Thanks |
| TIA | Thanks in advance |
| TMI | Too much information |
| TOPCA | Till our paths cross again |
| TPTB | The powers that be |
| TTT | Thought that, too |
| TTUL | Talk to you later |
| TU | Thank you |
| UAPITA | You're a pain in the a** |
| UGTBK | You've got to be kidding |
| UW | You're welcome |
| VBG | Very big grin |
| WDALYIC | Who died and left you in charge? |
| WFM | Works for me |
| WIBNI | Wouldn't it be nice if... |
| WT | What/who the |
| WTG | Way to go |
| WTGP | Want to go private |
| WU | What's up |
| WUF | Where are you from |
| YIAH | Yes, I am here |
| YOOC | You're out of control |
| YYSSW | Yeah, yeah, sure, sure, whatever |
| ZZZ | Sleep |