There is a recent example of someone repeating the same question, once for the UK and once for the US:
- What are the pros and cons of different types of smart switches (that are on the US market) ?
- What are the pros and cons of different types of smart switches on the UK market?
I think this is a bad idea. I mean, once the Australians and Germans and Canadians also make their own copy of the question, the site will be a mess. And any useful non-localized advice in the answers will not reach people from other countries.
A better solution would be to just ask the question once and let people answer according to the region they know something about (and mark they answers accordingly). The questioner should accept the overall best answer for him, taking into account which answer is most helpful in his locality. Good answers for other localities will get many votes from other users and therefore be ranked highly also.