B.B. Slang

I’m a neophyte on the Baptist boards and have been confused over some a couple of abbreviations I’ve seen. My most recent abbreviation confusion regards the use of “ITM”. What does it mean?
After some searching I finally found out what ROTFLOL means.
Here are some frequently used abbreviations and their meanings that I found.

B.B.=Baptist Board
LOL= laugh out loud
ROLF=Rolling on floor laughing
AKA=Also known as
ASAP= As soon as possible
BTW= By the way
FAQ= Frequently asked information
FYI= for your information
PS= post script

And here is a personal favorite I can’t wait to use:
PEBCAK=Problem exists between chair and keyboard.

Are there any others you can think of that will help those of us who are webbishly challanged?

 

Thanks,
Of course, the abbreviations seem simple once you know the key! PEBCAK (Hey, I got to use it!)

 

IMO?