I just tried the US quiz (76%) I got Wyomng (couldn't place it just right).
96% on South America (couldn't pinpoing Bolivia - the first country).
And 100% for Asia (but that was way to easy - no tiny countries there).
BTW - Danny: If you really never heard of those countries - then there's much you need to learn... Vatican is in Rome, yes; but it's also an independant state (the smallest country in the world - population of 1000 - all male). Slovenia? Just look at the sites we translate abandonia to