AdSense Site Diagnostics Gone
Last week Google added a new Site Diagnostics page to the AdSense console. It has since disappeared. Darren over at ProBlogger wrote to the AdSense team to find out what was going on, and Google wrote back that it was just a temporary test.
This seems a little strange to me. My guess is that this was put onto publishers pages by mistake, and Google quickly realized that it wasn’t supposed to be there and removed it.