Does anyone have any evidence (or strong suspicions) that over-aggressive INTERNAL linking can lead to either the de-indexing of a page or a serious Penguin / Algorithm slap?
After analyzing external back links pointing TO our site, it appears that the page that suffered the most damage had ONLY two back links; one questionable, one from a major US news outlet.
However, this page has the highest number of INTERNAL links pointing at it, and the INTERNAL anchor text is optimized.