I am back with one more question, I guess it came up during my sleep.
We know how to use copyscape, but how do you find out that your page has been translated or worse your site. Lets say there are 100 predominant tongues. And some like Chinese, Korean, Japanese, Arabic, Thai, sanscript, Russian, Greek,...,use different alphabets or writing systems. Is it tractable?
And let me give you a nightmare case. Someone translates your site or part of it in Bulgarian. One year later you translate your site in Bulgarian. Now google sees duplicate content, but you seem to be the copier as your material appeared afterwards!