The Brief:
FWIW is an acronym for "for what it's worth."

DEEP DIVE
FWIW is a more efficient way to say “for what it’s worth.” It can be used in text messaging, on social media, and beyond.
OOTD = Outfit of the Day
— jonvic but can be (@jaaambik) April 8, 2018
FTW = For The Win
HBU = How About You
WBU = What About You
FWIW = For What It’s Worth
YOLO = You Only Live Once
BTW = By The Way
ICYMI = In Case You Missed It
YW = You’re Welcome
IDC = I Don’t Care
FB = Facebook
IG = Instagram