| Acronym | Meaning |
| AFAIK | As far as I know |
| ASAP | As soon as possible |
| BFN | Bye for now |
| FAQ | Frequently asked question |
| FWIW | For what it's worth |
| FYI | For your information |
| IIRC | If I remember correctly |
| IMHO | In my humble opinion |
| LOL | Laughs out loud (or lots of luck) |
| OTOH | On the other hand |
| ROTFL | Roll(ing) on the floor laughing (also, ROF,L, ROFL) |
| RTFM | Read the f***ing (or friendly/fine/flipping) manual (or message) |
Less frequently used ones |
| AAMOF | As a matter of fact |
| AFK | Away from keyboard |
| AISI | As I see it |
| AKA | Also known as |
| BTSOOM | Beats the [stuffing] out of me |
| BRB | Be right back |
| BTW | By the way |
| CUA | Commonly used acronym or Common user access |
| FOAD | F*** off and die |
| FU | F***ed (or fouled) up |
| FUBAR | F***ed (fouled) up beyond all recognition |
| FUD | (spreading) Fear, Uncertainty and Doubt (disinformation) |
| GR&D | Grinning, running & ducking |
| HAND | Have a nice day |
| HTGTATA | Have to go through all that/this again |
| HTH | Hope this helps |
| HU | Him (or her) upstairs |
| IAE | In any event |
| IANAL | I am not a lawyer |
| ICCL | I could(n't) care less |
| IDK | I don't know |
| IIRC | If I recall correctly |
| IMCO | In my considered opinion |
| IMNSHO | In my NOT so humble opinion |
| IMO | In my opinion |
| IOW | In other words |
| IYKWIM | If you know what I mean |
| IYKWIMAITYD | If you know what I mean and I think you do |
| JM2C | Just my 2 cents |
| JOOTT | Just one of those things |
| MHOTY | My hat's off to you |
| NFW | No [bleeping] way |
| NRN | No reply necessary |
| OIC | Oh, I see! |
| OOTB | Out of the box (brand new) |
| OTTH | On the third hand |
| PITA | Pain in the [...] |
| PMFJI | Pardon me for jumping in |
| PMSL | Pi**ing MySelf Laughing |
| ROTFLMAO | Rolling on the floor laughing my ass off |
| RSN | Real soon now (which may be a long time coming) |
| SITD | Still in the dark |
| SWMBO | She who must be obeyed |
| SNAFU | Situation normal, all [fouled] up |
| SOHF | Sense of humour failure |
| SWAG | Scientific wild ass guess |
| SWALK | Sealed with a loving kiss |
| TANSTAAFL | There ain't no such thing as a free lunch |
| TIA | Thanks in advance |
| TIC | Tongue in cheek |
| TLA | Three-letter acronym (such as this) |
| TPTB | The powers that be |
| TTFN | Ta ta for now |
| TTYL | Talk to you later |
| TWIMC | To whom it may concern |
| TYVM | Thank you very much |
| WRT | With respect to |
| WYSIWYG | What you see is what you get |
| YMMV | Your mileage may vary |
| YWIA | You're welcome in advance |