Out of the many clients that we handle I am pleased to say that only 2 have been marginally "hit" and whilst it is tempting to try and undo or amend what you think is wrong I am going to wait and see how it settles down.
The vast majority of clients have seen improvements - one man's loss is another man's gain after all - but again I won't be cracking open any champagne.
The reality is all we need to do is be professional and quality digital marketeers and work on improving the user experience by delivering better quality.
I have read several "Penguin Recovery Plans" and they seem to amount to a large dollop of common sense. The best that I have read is http://www.seo-theory.com/2012/05/23/how-to-recover-from-googles-penguin-update/
Take a look and see what you think.