Good God. If you Australians are really that offended, you people need to get a life and maybe grow some fucking balls. It's just that name of a sports championship.
MLB is not even an American thing. The teams are mostly based here, but it is largely an international sport. About one third of the players in MLB are from outside the United States. They come from Japan, Venezuela, The Domincan Republic, Taiwan, Cuba... just to name a few. The best players in the world play here. That's why baseball was cut from the Olympics- because MLB players could not participate.
Another thing, maybe it wouldn't have to be called the World Series if someone would put together a league worthy of competing with MLB. The only one that comes close is the Japan League, and everyone knows that it is inferior. All of their best players come. Really, if Australians are that upset that it's called the world series, maybe you should, I don't know, put together a baseball program that isn't a fucking joke conpared to MLB (which actually has Australians playing, by the way).
Why the fuck do you people care what we call the championship of a sport you don't even seem to care about?