Slightly off-topic, but I've not seen the kind of commenting system shown at the bottom of the article before. You are invited to write up a response elsewhere

Slightly off-topic, but I've not seen the kind of commenting system shown at the bottom of the article before. You are invited to write up a response elsewhere on the web including a link to the article, and then post your URL in. It's a bit like a manual-pingback. It seems a good idea in principle, but would anyone actually bother?