I just spent half an hour cleaning up after a serious comment spam attack. Unfortunately, that means I’m going to have to leave the comments form turned off for a couple of days while I try to track down a security patch for this problem. If you have a comment, please send it to me via email and I will post it for you.
One hour later
I have now installed two spam plug-ins for my blog software, the highly-recommended “Akismet” and “Bad Behavior.” (I should have installed these months ago, but my spam volume has been so low that I just didn’t bother.) So I am going to re-open the comments, and hope these two plug-ins solve the problem.