I upgraded to MovableType 3.32 recently, and just turned on TypeKey authentication, so as to avoid comment spam.
This means that you will need to have a TypeKey profile in order to comment here. Sorry for the hassle! It is pretty easy to get a free TypeKey profile, so just do it 😉
This will also mean that when you do comment, your comment will be published immediately, instead of waiting for me to get around to manually clearing it.