Came across this on googles website which be of interest to people who are having problems with irrelevant ads showing up. Search for 'section targeting' on Googles adsense site for more details. All info below is copied from their site. I am certainly going to implement this on all my main sites and see what effect it has. Looks ideal to stop the adsense bot from searching your menu for keywords as an example, which may cover a wide variety of topics, resulting in the bot providing irrelevant ads. "Section targeting allows you to suggest sections of your text and HTML content that you'd like us to emphasize or downplay when matching ads to your site's content. By providing us with your suggestions, you can assist us in improving your ad targeting. We recommend that only those familiar with HTML attempt to implement section targeting. To implement section targeting, you'll need to add a set of special HTML comment tags to your code. These tags will mark the beginning and end of whichever section(s) you'd like to emphasize or de-emphasize for ad targeting." The HTML tags to emphasize a page section take the following format: <!-- google_ad_section_start --> <!-- google_ad_section_end --> You can also designate sections you'd like to have ignored by adding a (weight=ignore) to the starting tag: <!-- google_ad_section_start(weight=ignore) --> Copyright Google