One of the factors mentioned in the info about the Panda update is having too many ads on a webpage in relation to the content on a page. I have noticed in several of my sites that weren't hit as hard did not have any ads at the top of the page (when viewing the actual code for page)- at least not before several paragraphs of content.
I have been removing all but one ad unit on each page of several sites affected by Panda and placing this unit further down the page- still ATF but below some content.
I am seeing some competitors ranking on page 1 that have 3, sometimes 5 ad units per page with 2-3 of these ads appearing ATF I am wondering if moving ad placement and removing ads is the way to go?