On March 22, 2013 Google rolled out its Penguin 2.0 update (during the evening and right before the long Memorial Day weekend). Webmasters and SEO’s are still collecting the data about what has been affected and what’s not.
When Penguin 1.0 rolled out it mostly impacted the homepage of websites. However, Penguin 2.0 is supposed to affect deeper pages. The target of the new Google algorithm update are pages that use all sorts of “questionable” linking scheme to drive rankings.
Here are a few external resources that may help sort out the latest changes: