Discussion Forum—A Way with Words, a fun radio show and podcast about language

Does anyone have an *authoritative citation* (I'm sure we all have opinion) on the appropriate spelling of the initialism for Frequently Asked Questions?

I know the initial use was A) a collection of question*S* (ie, >1), and B) was a single collection. And so the plurality of the questions was subsumed within the TLA.

But common usage nowadays is to tack on the pluralizing "s", despite "Questions" already being plural.  Has this reached such a critical mass, so as to now being acceptable? (Does AP/Chicago/anyone voice in on this?)

Personally, I enjoy this about as much as "ATM machine" (or any of the others), but looking for some pronouncement on the acceptability of this practice.

BONUS QUESTION: How does one refer to a collection of collections when the trailing word already has pluralization? Isn't common behavior to drop the second pluralization?? (I can't recall right now.) Or then does that not communicate the higher order collection? So would it be correct to refer to a collection of multiple FAQ as FAQs?

If so, how does one pronounce that in non-innitialized form? If anyone says "Frequently Asked Questionses" I'm gonna hafta punch you.

Thanks for any help!

PS. Dawns on me typing this that I did call this an initialism, but I think common parlance among teh interwebs n00bs would be to use this as an  acronym. [For purposes of discussion, n00b would be defined as anyone joining teh intertubes after Permanent September.] Usage as an acronym I believe thus further reinforces the inclination to append the redundant "s'.