Welcome to the New Members on board...
Here are some abbreviations you may find on Budget 101:

MYO: Make Your Own

Mix: Means you mix it up and store it until you need it

IMO: In My opinion

JAW: Just Add Water

IMHO: In my Humble Opinion

ISO: In Search of (this is what you write in the subject line
when your looking for a recipe! it gets my attention quickly!)

OAMC: Once a Month Cooking

TNT: Tried and True (please note the difference between TNT &
t-n-t)

T-n-T: Tips-n-Tricks

REC: Recipe

OYO: On your Own.. (meaning.. I haven't tried it, and I can't
back it up!)

Request: This is an item that someone on list (or the
Budget101.com website requested

There are many more, but these are some of the most confusing...