"Gamefax"
Just like SQL is pronounced "Sequel" by those in the know and the only one's who say S-Q-L in the office are P.M's who wouldn't know a inner join query if came up on the street and wracked them in the balls.
I once did hear a female manager pronounce URL as "Earl" and I had to LMAO to the dismay of all assembled.
Edit: and also Web Services DL's (WSDL) are shortened to phonetic "Wizzdle". It's common in IT to phonetically pronounce acronyms this way so anyone who tells me gamefax is wrong, is well wrong.
I've never heard of SQL called sequel in my 7 years of being associated with the Computer Science faculty at my University (I'm a post grad student). Not that I spend a large amount of time dealing with databases (haven't touched one in 4-5 years), but I did manage to get a High Distiction in the database class I took.
Maybe it's just around here, but unless the abbreviation spells something, it usually is spelt out. I've never actually heard someone say Faxs for FAQs, but I am aware of it because I've seen this discussed before on the intarwebs.