AdSense introduces ‘Site Diagnostics’ Feature.
June 10, 2006 by Gaman
Google has added a new feature in the AdSense account called ‘Site Diagnostics’.
This feature shows the diagnostic information when Google crawler is not able to access pages where you have AdSense codes on.
There are several reasons why URL showing up as blocked as explained here.
This can be a useful service to help you identify problematic pages which can cause you to lose money. This crawler report is updated weekly.