Meanings of Abbreviations in Titles?

I don’t know if I’m just getting bad at googling, but I can’t seem to find any list or resource that helps explain a lot of the abbreviations I see in titles in brackets [ ].
Is there a list somewhere? I would like to know what a lot of them mean. If there isn’t, could someone help me out?
ex: [FS][WU]… and a whole lot more…
Thank You!
Answer #1
File Hosts list…

Answer #2
They refer to the filehosts used ie:
RS = Rapidshare
FS = Fileserve
etc
Answer #3
Ah ok, thanks!
Answer #4
thanks I was wondering this also