I’ve gotten a few comment spams lately (just enough to be annoying). Typepad offers an option to require a typekey before being allowed to comment. If you have a typekey account, then you simply enter your username and password. If you don’t have a typekey, you would need to get one.
I’d really be interested in what people think about this (either comment or email). I’m considering using typekey, but will not if most responders object. Right now, comments is set to optional use of typekey if you want to try it out.