Below are some tips to help you optimize your pages to make them more Adsense-friendly. Note that these tips deal with ad delivery rather than ad formatting or placement. While ad formatting and placement may affect ad click-through rates, they have nothing to do with the delivery of relevant ads to your site. Your site must display relevant ads before they have any chance of being clicked on.
1. Avoid too much content on a page
If Adsense does not understand what is your page is about, it cannot deliver ads targeted to its content. Although a human being can easily tell what a web page is about by taking a glance at it, computer algorithms are no so intelligent. If your page contains too much content, chances are that it also contains too many seemingly unrelated keywords. Adsense becomes confused and displays PSAs or ads unrelated to the topic of your page. Try dividing the page into smaller ones, each focusing on just a few related keywords.
2. Avoid too little content on a page
If your page contains lots of graphics and very little text, Adsense may have a hard time figuring out what it is about. This is especially true when the bulk of your...