Rosalind - 10:02 am on Sep 1, 2011 (gmt 0)

The problem I see here is that you're equating visitor numbers to Panda's assessment of quality. But Panda is all about sending fewer visitors to lower quality pages, so what Google sent traffic to pre-Panda doesn't tell you all you need to know. A better source of information might be which articles, and which types of pages, people have linked to without having been asked to by you.