Vox - Private Conversations

Isn't this a bit of a contradiction? Publishing a private conversation. What is the advantage of this versus any number of email newsletter type options? I don't quite get it but if I have some time, I will probably will get an account and see if it is any easier to use than Blogger given the stability issues recently. This may provide an alternative plan. Has anyone used it? What do you think about it? Technorati Tags : Blogger, alternative+plan, redudancy, vox, private+conversation