I’ve changed the settings that govern comments here to remove the requirement for registration before comments can be made. I had the registration set to guard against spam. Several people have told me that they have had trouble registering, or that they don’t like to register on blogs. So from now on people can comment without registering. Comments from new posters will be held in moderation until I approve them. A name and email address (that will not be published) will still need to be entered as per most other sites.