SO, being a Dad I get around the parents forums sometimes looking for information and advice on child rearing and other help. There are times you just need perspective from someone else and often those around you cannot relate or understand. One thing that really gets me about the forums in the use of jargon. So if you ever needed a guide to parenting and baby forums / acronyms here is a list for you. Hope it helps. Once you understand DD, DF, DS, DW the rest is easy.

AP - attachment parenting 
BB - Bulletin Board
BF - breastfeed or breastfed
BFing - breastfeeding
BTDT - been there, done that
BTW - by the way
dh/dw/dd/ds/dp - a reference to members of one's immediately family:
dear husband, dear wife, dear daughter, dear son, dear partner (etc.)
FAQ -Frequently Asked Questions
FWIW - for what it's worth
IMO - in my opinion
IMHO - in my humble opinion
LLL - La Leche League (international breastfeeding support organization)
LOL - laughing out loud
LMAO - laughing my arse off
MIL/FIL/SIL/BIL - mother-in-law, father-in-law, sister-in-law, brother-in-law.
OTOH - on the other hand
ROTFLMAO - rolling on the floor laughing my arse off
SAHM/SAHD - stay-at-home [Mum or Dad]
WAHM/WAHD - work-at-home [Mum or Dad]
WWW - World Wide Web