shallow - 12:57 pm on Nov 4, 2011 (gmt 0)
From reading on Google forum it seems that a lot of sites (including ours) were hit hard by this latest update. Apparently sites with ads above the fold, or mulitple ads on single pages were affected.
I've always had three AdSense ads on a page. Their placement was suggested by an AdSense rep a couple of years ago. Occasionally, I'll manually add a small link unit in a long article.
A 728x90 ad runs at the top of every page, yet you can still see about two paragraphs of each article. In other words, some of the text is not pushed below the fold (though I suppose it is for those viewing the site on a tablet, phone, netbook, etc.
I'm wondering if I should have my web developer remove the top ad. I get nervous about making changes because I got hit very hard by Panda.
Has anyone found that removing an ad improves CTR?