Ever since Penguin rolled out my site, like many, took a huge hit. I am working on some possible onsite over-SEO, but I was looking at my KY ranking and realized thatmy site is completely gone from Google for a certain KY for a review of a service, which was a revenue stream. Was these pages completely deindexed for these KY for good? Can they come back? Or should I noindex them and build new pages (URL)? I have a method to test since it seemed to work on another site post-penguin. My question is if I should use it on the current pages or rebuild them with new URLs. Any advice?