A kind reader sent me an email to tell me that he was having an error when trying to add a comment to my posts.
I’ve had a look at this and it works fine now. It was an issue to do with reCaptcha, which is an application that stops people who write heinous programs spamming the site with nonsense comments.
He also mentioned that it would be useful if I added an RSS feed to the site.
I’ve duly obliged and if you have an RSS reader, you can just click on the RSS icon 
on the right-hand side of the page to subscribe to my feed.