I suspect that was prior to the initial launch. The architecture has presumably evolved to the state described in the HS article since then. Edit: yes, Casey s

I suspect that was prior to the initial launch. The architecture has presumably evolved to the state described in the HS article since then. Edit: yes, Casey says in the Tim Bray interview that "As soon as we could, we got alpha testers in to try it out... 4 months later, we had a site that we were ready to announce."