I got this information on AdSense:
Our crawler was unable to access your page to determine its content and display relevant ads. When our crawler can’t access the content, often we won’t show ads resulting in lower revenue and coverage. At other times, we’ll show ads that are irrelevant resulting in lower CTR. Follow the links in the ‘How to fix.’ column to correct these errors and improve AdSense performance.
Google suggests that I add this:
User-agent: Mediapartners-Google Disallow:
I would like to do something like this:
Search Engine Optimization for WordPress
How to accomplish this, or maybe you have a better suggestion?