Figured out the problem on my end and I wonder how many others may experience this too.

It is the Avast Online Security extension on Chrome. On Firefox, it is the Tracking Protection in your Privacy settings. On Firefox, it would not show Google Ads until the Tracking Protection was disabled (look at the privacy shield to the left of where you type in your domain name) but it did show Disqus. Chrome, with Avast, did not show Google Ads nor Disqus.

I too am not showing Google ads: http://myinsidertraveltips.com/japan-rail-pass/