Actually, I think 650MB is more of the standard than 700MB.
Not sure if it has anything to do with Orange Book, but if you look at old burners (2X, 4X, 8X, etc.), some of them don't support 700MB CD's, just like some modern burners don't support 800/870MB discs. 700MB has become more of the modern standard for most burners, but before 700MB was mainstream, 650MB ruled the roost. And before 650MB, there was an even smaller standard...something like 300MB. Odd, I know.
No, I like women.