Is there any way to tell for sure if there is a penalty? My client has a ton of low quality back links, and I think they are in danger of a Penguin penalty. Any way to know? The links are there for a business reason.... their clients mention them in the footer, with a backlink. It is not a link scheme. but folks are generally not clicking on a footer link, and so there is a pro/con of leaving it as it.
Any way, to diagnose whether a Penguin penalty has already hit?