In reply to...

...the chap who wrote in asking about the rules for Comments on my Blog.....the rules are , in general:

nothing too long; nothing that has an offensive, discourteous  or bullying tone;

not too much from one particular commentator (ie imaximum of one or two  Comments on any one topic from any individual); 

nothing anonymous unless the person concerned sends a separate email giving his/her name, and possibly not even then if the comment is too rambling or discursive or rude; and

nothing that simply prolongs a discussion once I feel it is time to draw things to a close.

These are roughly the rules used by newspapers for publication on a Letters Page.  Newspapers also reserve the right to edit or shorten letters, but I am unable to do that on a Blog.