I've just upgraded MT on my site to version 3.11. One of the major features being commenter registration, which I have promptly enabled. That should reduce, if not totally eradicate blog comment spam on this site. This, though, would mean a minor inconvenience that you'd have to register a TypeKey account. This free registration will enable you to post comments on ANY MovableType-powered blog, including that of my brothers'.Update 12:30 am: I'm still working on getting the new commenting system working so bear with me while I get some rest and continue tomorrow morning.

MovableType 3.11