It seems to me their approach is to get power-users like HN folks on-board first. Conveniently, we are also the users who would run servers for our friends or do a startup that would do Diaspora hosting. But that's my point. If we keep seeing these alpha releases, it will loose the buzz, and it'll never reach critical mass / momentum. Eg. this release is so minimal, I really don't care. Tell me when it's 1.0.