Thanks to reader and frequent commenter W., who informed me that there was a problem with using a TypeKey account to post comments without waiting for moderation.

When I changed the name of the Movable Type comments script in a futile effort to defeat comment spam, I neglected to let TypeKey know of the change, so TypeKey couldn't associate my blog with my registered key. Thus the "site hasn't signed up for this feature" message. It's fixed now. Comment away!