'Aussies do say "G'day." At all levels of friendship, all levels of formality and all levels of family familiarity. The first word between two lovers in the morning is "G'day." The other main greeting would have to be "G'day mate." The reason why this brief greeting has such universal acceptance is simple: it's the flies. The longer your mouth is open the more flies that can crawl in.'
Xenophobia is an irrational fear of foreigners, probably justified, always understandable.
Xenophobe's Guides - an irreverent look at the beliefs and foibles of nations, almost guaranteed to cure Xenophobia.
Xenophobe's Motto - Forewarned is forearmed.