That's not supported. It works only for members and makes sense that way: by putting in their e-mail address it's only a small step further to provide a password and login name, which allows them to unsubscribe etc.

I think I'll check this out: http://www.feedblitz.com/

People should not have to create accounts on a blog site just to subscribe. We all have enough login accounts on various systems anyway; impossible to keep track of all the usernames and passwords and tedious to have to login every time.

It's just a different philosophy. A lot of people just want passive subscription; they get intimidated when you talk about creating an account. And then, they can't remember how to login, etc.

I see your point, but it's more logical to create a light account, then have to maintain a separate list of users/subscribers.

Once logged in, they would stay logged in btw.

RSS! No accounts needed, and all you have to remember is to subscribe.