FWIW meaning in Internet ?

Answer: What is For What It's Worth mean?

"For What It's Worth (Stop, Hey What's That Sound)" (often referred to as simply "For What It's Worth") is a song written by Stephen Stills. Performed by Buffalo Springfield, it was recorded on December 5, 1966, released as a single on Atco Records on December 23, 1966, and peaked at No. 7 on the Billboard Hot 100 chart in the spring of 1967.

It was later added to the March 1967 second pressing of their first album, Buffalo Springfield. The title was added after the song was written, and does not appear in the lyrics.

reference

Full Form	Category
Forgot Where I Was	General
For whatever it's worth	General
For What It's Worth	Internet
Folga Wolga Imoga Womp	Internet
For Whoever Is Wondering	Messaging