I don't care how anybody pronounces it. I think it's much more important to know what is meant by the prefix "giga-". Does it mean 1,073,741,824 or 1,024,000,000? I guess that depends on if you are using computers or selling them. Or does it simply mean 10 to the 9th power? Which reminds me of the origins of a billion. We now accept 109 to be a billion, but it was originally used as by-million or million-million which is 1012.
It wasn't how someone pronounced "giga-" that cost us "billions" of dollars and a lost satellite to Mars. It was a mistake with converting numbers.
P.S. I was going to post this as a poll titled "Not A Thread About Lizard Dude", but there have been way too many copy-cat thread lately and I didn't want to start another one.
Edit: to -> too