Not just this Forum but the acronyms do prevail throughout many forums online.
This doesn’t pretend to be an exhaustive list, there are probably many more around, but these are probably the most commonly used ones….
AFAIK – As Far As I Know
AFK – Away from keyboard
AKA – Also Known As
BRB – be right back
BTW – By The Way
FWIW – For what’s it worth
FYA – For Your Amusement
FYI – For Your Information
HTH – Hope This Helps
IANAL – I am not a lawyer
IIRC – If I Recall Correctly
IMHO – In My Humble Opinion
IMO – In My Opinion
J/K – just kidding
K.I.S.S – Keep It Simple Stupid!
LMAO – Laughing My Ass Off
OMG – Oh, My Gosh
OTOH – On The Other Hand
OWOA – One Way Or Another
PITA – pain in the ass
ROFL – Rolling On Floor Laughing
RTFM – Read The F****ng Manual
TA – Thanks Again
TIA – Thanks In Advance
TTYL – talk to you later
………. and I guess this is a perfect cue for more with an offshore type meaning 😉