Google introducted Adsense Section Targetting some time ago. If you dont know what it's all about, it basically allows you to better manage what sections of content on the page you want Adsense to target. One the flipside, you can also specify what sections of the page you dont want adsense to take into consideration. For a new site I was optimizing, on the homepage I was getting all these unrelated ads due to a large text link nav menu bar. By sectioning off the nav bar code using these tags: <!-- google_ad_section_start(weight=ignore) --> nav bar html <!-- google_ad_section_end --> As soon as the Google Media bot next came around, the ads became relevant. Alternatively, if your just wanting to target adsense with certain sections of the page, use the following start tag instead: <!-- google_ad_section_start --> Personally, I just find it easier telling Google what parts of the page not to look at. Google does mention that you should only target fairly large portions of content on the page (at least a few paragraphs) Otherwise, there would be room for abuse as it would appear as though your only trying to target high paying ads, which may not be the overall theme of the page. Keep in mind though, when you apply the section tags, you wont see the results on the next page refresh, you have to wait for the google media bot to return and crawl the page (which should only take a couple of days or weeks). I figured some of you may find this useful.
Thanks, David, that's very useful information, especially the using of section targeting to get the Adsense bot to ignore an extra menu list which often throws Ansense out of whack.