http://u.qdnx.org/file/erkan-20150131T210029-d8693vn.html
"Why should federation grow at all?": I believe that federation only grows by those who will run the instances themselves. Let's forget !gs for a minute. And look at !pumpio: from UI level we know how bad it is, for a user who doesn't want to admin it. But if the "right" techies use it, it will grow.