Sharing your ad space

from http://adsense.blogspot.com/2008/07/sharing-your-ad-space.html

A number of publishers have asked us if it's acceptable to place multiple publishers' ad code on the same page or site. Often they'll run into this issue when two AdSense publishers manage a site together and both want to display their ads, or if a site owner hosts content and ads from other publishers on the same page as their own.

The answer is that yes, we do allow this.