deadsea - 10:01 am on Jun 18, 2012 (gmt 0)
Are all the additional links pointing to the higher quality content on the site?
I have worked on some massive sites with highly varying degrees of content. Tons of amazing, highly engaging pages, as well as multiple times that of poor pages. These sites weren't hit by panda because they do a good job of funneling users, pagerank, and googlebot to the best pages through 100+ internal links on every page.