When an advertiser buys ads on the network, they have detailed information on what types of ads you are running and your pricing for each of those zones. Keeping these prices competitive with others will allow you to genereate more sales.  Obviously if your website is ranked higher, you can adjust your pricing to what you expect from each ad zone.

Changing your site info

You can change your ad zone information such as your description, pricing, and ad restrictions by going to your account and clicking on "Manage Ad Zones".  Select the Ad zone in the drop down bar that you want to edit, and click on "Update above selected Ad Zone".

To delete an ad zone, simply select the zone you want to delete and click on the red X button to the right of the zone.