Regrettably, I have had to introduce a comments policy after a series of abusive comments were made.  So now:

I very much welcome discussion on my blog postings.  All comments are moderated, but approving a comment does not mean I agree with it, simply that I think it adds to the conversation.

I take no responsibility for the contents of individual comments.

Any comments that are abusive will be deleted without notice.  Repeated infractions will result in a user being banned.