The following acronyms are commonly seen on the internet and may be of some help in determining what people are talking about on the Second Weddings Board and in general on the net.
AW: "Attention Whore"
BC, BCP: Birth Control, Birth Control Pills
BIO: Your Community Bio
BM: Bridesmaid
BP: Bridal Party
BTW: By The Way
DF: Dear Fiance
DH: Dear husband (also see WH)
DIY: Do-it-Yourself
DW: Destination Wedding
E-ring, ering: Engagement Ring
EOM: End of Message
FBIL: Future Brother-in-Law
FFIL: Future Father-in-Law
FG: Flower Girl
FI: Fiance/Fiancee
FMIL: Future Mother-in-Law
FSIL: Future Sister-in-Law
GM: Groomsmen
GTG: Get Together (Local Knotties Meeting)
HM: Honeymoon
IMHO: In My Honest Opinion
JK: Just Kidding
LMAO: Laughing My Ass Off
LTBM: Living Together Before Marriage
LOL: Laughing Out Loud
MOH: Maid/Matron of Honor
NFP: Natural Family Planning (natural BC)
NFT: No Further Text
NMS: Not My Style
NWR: Not Wedding Related
OMG: Oh, My God!
P&E: Planning & Etiquette Board
PG: Pregnant
RB: Ring Bearer
RD: Rehearsal Dinner
ROTFLMAO: Rolling on the Floor, Laughing My Ass Off
ROTFLOL: Rolling on the Floor, Laughing Out Loud
RP: Repost
SAHM: Stay-at-Home Mom
SAHW: Stay-at-Home Wife
STD: Save the Date
TIA: Thanks in Advance
TTC: Trying to Conceive (Baby boards)
TY: Thank You
WB: Wedding Band
WH: Wonderful Husband
WP: Wedding Party
WR: Wedding Related