| <bg> | Big grin |
| <g> or <G> | Grin |
| BCNU | Be Seeing You |
| BTW | By the way |
| DLG | Devilish Little Grin |
| FAQ | Frequently Asked Questions |
| FOTCL | Falling Off The Chair Laughing |
| FWIW | For What It's Worth |
| FYA | For Your Amusement |
| FYI | For Your Information |
| IMHO | In My Humble Opinion |
| IMNSHO | In My Not So Humble Opinion |
| IMO | In My Opinion |
| KISS | Keep It Simple Stupid |
| LOL | Laughing Out Loud |
| OTF | On the floor. Short form of ROTFL. |
| OTOH | On The Other Hand |
| PD | Public Domain |
| ROTFL | Rolling On The Floor Laughing |
| RTFM | Read The Fine Manual. Used when a stupid question is asked. |
| TIA | Thank In Advance |
| TNX | Thanks |
| TNX 1.0E6 | Thanks a million (humorous) |