I've worked it out. If I click 'read more' from your feed, it opens it up in your feed. From there, I cannot comment. If instead of doing that, I click on the opening words, it opens it up in The Daily Cuppa, then I can comment. But once I've clicked on 'read more', there's no way to get it to open in The Daily Cuppa, so I can't comment. Weird. Normally, if I do this and click on the title, I can get through to the story within the publication and comment there. Clear as mud?