I've had an issue with broken comments on this site that was related to MT-Blacklist (a now-obsolete tool that helped curb spam). Sorry about that. Instead of trying to fix it, I'm just going to turn off the Blacklist and leave comments open on the most recent posts.
What does this mean to you? It means that if you'd like to comment, please do so quickly, before I turn them off. I'll stick to this strategy until Common Craft moves to Drupal.
Thank you for your attention.
UPDATED: In a not-so-ironic development, the comments on this entry are now disabled thanks to repeated spam comments.