Important in-game Info

with assistance from @mushcrush

General

CB - Chat Board
IB - Item Board
F2P - Free to Play
P2P - Pay to Play
Whale - Someone who spends a lot of money in game
Dreamie - Item(s) in game that you want the most

Content

HB - Happy Bag
LB - Lucky Bag
CHB - Custom Happy Bag
PC - Petite Collection
SC - Sweet Collection
SB/SBC - Sugarbunnies Cart
SF - Smile Festival
SM - Smile Market
PA - Palette Atelier

Values

C - Common
R - Rare
SR - Super Rare
CC - Common Common (Usually given to common bonus items)
RR - Rare Rare (Usually given to rare bonus items)
SSR - Super Super Rare (Usually given to bonus super rare items)

Trading

FT/UFT - For Trade / Up For Trade
LF/OLF/DLF - Looking For / Only Looking For / Desperately Looking For
NFT - Not For Trade
WL - Wishlist
Dupes - Items you have more than one of
Cham - Items that have the ability to change color based on your avatars hair color

Characters

LTS - Little Twin Stars
HK - Hello Kitty
PPM - Pompompurin
MM/MMP - My Melody
BBM - Bad Badtz Maru

Happy Bag, Juice Events, Cake Events, 7 Day Bags, Petite Collection are all considered

base value!

SR = SR
R = R
C = C
SSR = 3-4 SR
RR = 1-2 SR
CC = 1 SR

Sweet Collection, Growth Events, Balloon Events, Sugarbunny Carts, Lucky Bags, and Custom Happy Bags are all 2x the value of the basic value bags.

SC SR = 2 HB SR
SC R = 1 HB SR
SC C = 1 HB R
SC SSR = 6-8 HB SR or 2 HB SSR
SC RR = 2-4 HB SR or 1 HB SSR
SC CC = 2 HB SR

1x / Base Value = Reg HB, Events, 7day, PC, Recycle, Attendance
2x = SC, LB, 48hr, 3day, F2P SB, B/S, Saku, Smile Fest, CHB
3x = 24hr, Milk SB
4x = 24hr SC