indyank - 3:08 pm on Jul 2, 2013 (gmt 0)
Why do you think it has been affected by the algorithms? Was it ranking earlier and has dropped now? If yes, for how long it had been ranking on top?
I don't see any issues with internal links or with informational pages linking to e-commerce pages as long as they are related and if they are in content links. If they are navigational links, it shouldn't really matter.