The english that the world is learning nowadays is american english. I realized this a while ago. Whenever I see a non-native speaker around my campus, I see that the english that they speak and therefore believe to be the 'one and only form of english' is american.
Nothing wrong with that... but it is interesting to note how english has left the UK to become an American identity.
Yesterday, one guy asked me "What language do you speak back home?"
The answer surprised me - when I said that I speak 3 languages on a daily basis and for all practical purposes, english is in fact my native language or my first language.
It is also interesting to note that the British, the Australian, the New Zealanders or the Americans might have their typical way of using the language - however, the Indian way is not used as confidently by Indians as is by the aforementioned nationalities.
I believe (and that is the flaw - believe) that if an Australian comes to the US he will not switch to the American accent. However, many Indians will. Much of it has to do with the speed with which we speak english and the fact that as an Indian it is mildly difficult to speak in english only, as we Indians usually use english in conjunction with some other 'native' language.
Some people may come to believe that I have issues with people speaking in non-native accents. That is not entirely true.
What I do have a problem with is the partial accents (It's almost there but not quite) and the temporary accents (changes as the colour of the addressee changes).
Even the partial accents I will very willingly accept, however the temporary accents are just hilarious.