A bit of housekeeping. Blogger hosts this blog and they have the option of requiring a user to enter a cryptic string of characters before posting a comment so spanners can't automatically add their advertisements to blog posts. The problem is this feature doesn't always work correctly.
I've been getting a number of spam comments since disabling this feature so I'm going to turn it back on. If you're unable to post a comment please email it to me at firstname.lastname@example.org along with a link to the post in question and I'd be happy to post the comment on your behalf (yes, I will certainly post opposing viewpoints).
Thanks for understanding.