In October, Google released another update dealing with this issue called “Top Heavy 2.†In this update, the sites which had been penalized and which had subsequently fixed the problem had their penalty removed. In addition, Google penalized any new sites that were now in violation of the original update. Thanks, Koustuv
Google free the “Top significant one Update,†that penalised pages for having too several ads on top of the fold or at the highest of their web site generally. That update additionally penalised pages that didn't have enough content at the highest though there have been few ads.