On Friday there was a post on the Natural Search Blog about case sensitive queries on google - read the post here.
I have tried running a few queries in Italian (really just a few) but didn't come up with anything and I was wondering if anyone else may have (or would like to) attempt emulating the experiment they ran on Natural Search and perhaps get back to us with your findings ...

I find it hard to believe GG would really want to reintroduce case sensitive queries and tend to believe it's more or a bug than anything else.

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Sante J. Achille
Search Engines & Web Marketing Consultant
skype: rifardo

i don't think this is something they would do generally - however i think there's an issue with trademarks that has forced their hand

take 'spam' for example.

Spam is a trademark of a company
spam is the term for junk-email.

This seems to make sense, as the examples in the post that you linked are based on having an upper-case first letter as the only difference.