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This is a GREAT idea, one of the best features of wikipedia for the multilingual-ed is you can see the same topic in a different language with single mouse click.

I was thinking the same thing, this would be a great feature.

You could get a few percentage of the karma of the original poster when the question/answer gets upvoted in the language you wrote it (And the original poster would get the karama too).

The karma would have the same value across all languages.

Users should be able to approve translations though

That's actually a great idea...

That's basically what they are doing.

If someone asks a question on the Portuguese then it would be easy for an English and Portuguese speaker to search the English site for the answer and then post to the Portuguese site and earn their karma.