We don't even have a page full of users yet:
I understand that Adam was the first user, which makes sense because he's the developer that made the site go live. Henry was the second user to join, which makes sense since Henry is always keen about new beta sites. However user #3 is on a multi-year network-wide ban. How could such a user be aware of the Private Beta? The email was sent out to users that committed to the Area51 proposal, but suspended users can't commit to proposals.