"Why do you require a CAPTCHA if you have to be a member to post a comment?" Asks Frankenpaper to which I replied that I didn't know that I did. And so it is that, after a bit of tinkering with the backend of the website, if you are a registered user of any sort you can now comment without having to fill in a Captcha form. My apologies for not sorting this out earlier. I hadn't realised it was set as an option. If there are any other annoying 'features', let me know and I'll see what I can do.
Oh, and you can now comment if you are not registered though your comment will be held in a queue for moderation by me. I had originally turned anonymous comments off so I didn't have to spend my time clearing up 'amusing' and 'clever' comments left after school visits. Ah, the wit and wisdom of youth 🙂