Google rolled out the Penguin update on the 24th April, and approximately 3% of all websites were punished for SEO initiatived to unnaturally affect search engine rankings. The punishment was a deterioration for certain keywords. If you are one of the websites affected and you have noticed a sudden deterioration in non-branded search engine traffic it is time to have a good look at your on-page SEO and your link portfolio. Relevance offers link cleaning services to help companies in the wake of Penguin. Contact us today.