Google Starts Penalizing Sites for Rich Snippet Spam

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We do structured markup in all of our sites, but in some cases we add it in non-displayed elements because we don`t care to show it, but it`s needed for completeness.

Haven`t received any penalties... has anyone else run into this?   Wao, Google is like one of those whitewater primary teachers always instilled us very afraid.? Google Starts Penalizing Sites for Rich Snippet Spam