Comments are welcome on all of our blog entries, however, all comments are moderated. Personal attacks or abusive comments will not be published. Criticism of organisations as against individuals is welcome if it serves a justifiable purpose. It should not be gratuitous, but well-founded, based either on experience or argument. We welcome robust debate, but avoid sweeping, unfounded attacks. While we like to publish as many comments as possible, we may hold back comments which contain harsh criticism with no attempt at all to give that criticism a justified base. Commenters who have affiliations that readers should be aware of, or conflicts of interest, must declare them. Commenters need to identify themselves by their full names unless there are good reasons for not doing so.