I am participating in an adsense beta test at vBulletin Webmaster. Details are here: Google AdSense Test The first part of the Google Adsense Beta Test involves rotating the ads. You specify locations for the ads; Header, below nav bar, after first post, after last post. You ad some specific code and what happens is that with every pageview, the ad only appears in one of the allotted spots. In the case of this site, I have chosen 4 spots, The header, below the navbar, after the first post and after the last post. Google is monitoring the thread, so feel free to post any opinions there so they can see your thoughts about this test. I would like to know any opinions you have also.