comment moderation from now on

Maybe it's because of the start of the silly season, but in the last couple of days we have had to delete a few comments from cranks and people clearly "under the influence", so we have therefore introduced comment moderation. This means from now on you will need to fill in a word verification and wait for your comment to be approved before it is published.  Most media sites do this to prevent pollution of their sites from the aforementioned denizens of cyberspace.