Matt from World of Matticus convinced me to open comments to anyone, not just registered users. If you’ve registered already, thanks much–you’re in the GoW club.
His blog has been running longer than mine, so I can’t refute his advice, because I have no idea what I’m doing. He also runs WordPress on Dreamhost, so if he can make wide open commenting work, then I guess I can too.
If your blog has been running longer than his and you disagree, please let me know. At least you won’t have to register to do so.