Adding multiple ad units can help optimize your performance by leveraging Google Adsense large inventory of ads. Provided you don’t place more ads than content on your pages, you can put any combination of ad units, link units and/or search boxes on each page of your site.
Remember that the best way to measure the effect of multiple Adsense ad units is to examine the impact on your overall Google ad Adsense earnings.
Multiple Adsense ad units may prove particularly successful for the following pages:
- Pages with lots of text, requiring users to scroll down the page.
- Forum or message board pages, particularly within threads.
- Pages where only smaller ad formats (such as the 125 x125 button) will fit.
Place the Adsense ads on your pages that receive the most traffic.