This gets rid of delegation. :( Delegation was what sold me on openid in the first place. Why would delegation ever need or get buy in from email providers, ISPs and social providers? Delegation allows me to own my identity without owning it's management and that is the most wonderful thing about openid. I don't want to be thought of as me@facebook all over the web because I don't control how long facebook will exist or not go rouge or not ban me. It is very important that I be me@mydomain on the web with me2@facebook only currently being delegated the responsibility of authenticating me and providing my details.

Removing delegation removes the major part of open from openid as far as I am concerned.

Delegation still works, but you'll need to run or use a server which is willing to assert your domain name.

Ummm... it would be nicer to have something where my domain can simply assert that me@mydomain is equivalent for the moment to me2@otherdomain and the otherdomain has to do nothing extra. If the otherdomain has to assert mydomain then I no longer have total control and it all is suddenly a lot less transparent.

This is great but will only be useful if Facebook, and to a lesser extend, Microsoft get behind it.

Google seems to be sold since it is basically a souped-up OAuth and Brad Fitzpatrick now works there.

David Recordon, who wrote the big post on that page actually works at Facebook. As does Luke Shepard.

Facebook auth already works like that, you login with oauth and they return JSON.

OpenID was DOA when they decided that URLs were identities rather than email addresses.

You can argue all you want about the technical merits of that decision, but the reality is that email is identity for pretty much everyone that doesn't code.

This proposal supports using email addresses as identities.