Pointless Acronyms

I don't have a problem with acronyms, I just have a problem with the ones that have no utility and try to be cute. Spell it out for God sake! A short list of irritants:

AFAIK: As far as I know (clearly not much about good English)

ROFL: Roll on floor laughing (I almost did the first time I read it)

IMHO: In my honest opinion (what a waste of capitals)

FYI: For your information (I stop reading sentences that come after FYI, the acronym supplies enough information)

F3I: Everyone (?? Major question marks after this one)

More, as and when...