BIN - buy it now (ebay related)
BNIB - brand new in box
CCB - Cream Colour Base
CCO (or CCS) - Cosmetics Company Outlet (Cosmetics Company Store)
CP - Custom Purchase
DC (D/C, DC'ed) - Discontinued
D/S (DS) - Drugstore
E/L - eyeliner
E/S - Eyeshadow
EOTD - eye of the day
FOTD - face of the day
GC - Gift Certificate (gift card)
GWP - Gift With Purchase
HG - Holy Grail
LE - Limited Edition
L/G - Lipgloss
LOTD-look of the day
L/S - Lipstick
LNIB - like new in box
MA - makeup artist
MLBB - My Lips But Better
MSF - mineral skin finish
MUA - makeupalley.com
NIB - New In Box
RIS - Received In Swap
SA - sales associate
SIB - Still In Box
T/M - tinted moisturizer
UD - Urban Decay
YLBB - Your Lips But Better