Email and internet abbreviations

Do you know any short forms and abbreviations from the email, chat rooms, texts etc. below?

CU    
RU    
CC    
ASAP    
Btw    
L8R
LOL
IMO
IMHO
FAQ
FYI
ROTFL
Thx
TBA

Match the short forms and abbreviations above to their meanings below

To be announced frequently asked questions later carbon copy thanks are you by the way see you as soon as possible in my opinion in my humble opinion for your information laughing out loud rolling on the floor laughing
What do you think about using expressions like these in business emails?