I have heard from many of you in the UK and Canada that you're having the same problem as readers in Australia, New Zealand, and India, now that Blogger is adding country-specific suffixes to the blog's URL.
This causes a compatibility failure with Disqus, our third-party commenting system. For comments to load correctly, one must be viewing the blog at blogspot.com.
To access comments, replace the '.ca' or '.co.uk' or your specific country's extension at the end of the URL with '/ncr' and press enter. (If that doesn't work, try blogspot.com/ncr.) If you then right-click on post titles from that page and select 'open link in new window,' the page in the new tab will allow you to view and post comments.
There's more information here. (Thanks to Shaker Teaspoon for passing that along.)
I'm so sorry for the inconvenience, and I am looking into alternatives so this won't be a permanent problem. Unfortunately, as many long-term readers will recall, trying to exist on our own server was a never-ending nightmare because of determined anti-feminist hackers, so we're pretty dependent on the safety of Google's firewall. I will, however, try to figure something out.