Differentiating between User Identifier and OP Identifier

Hello, I am new to this group and OpenID in general so apologies if I repeat questions already asked here before. I did try to read a few months of backlog to catchup. I've spent the past 10 days implementing OpenID support for session authentication. I am currently working on an OpenId

OpenId as API authentication method

I am not sure if this belongs in the spec list, but I'll give it a try. I would like to suggest adding some text to section 11.1 (or anywhere else that's appropriate) that will provide guidelines for using OpenID in a scenario where the OpenID RP is not the site the user is actually using. The

Re: OpenId as API authentication method

You should probably check out OAuth: http://groups.google.com/group/oauth, and its draft spec http://openauth.googlegroups.com/web/OAuth%201.0%20-%20Draft.rtf?gda=s1UWzkYySf4xbkOgHBZma37zlp9GzEEF__EUK3CcB8RrKx_-nmG1qiJ7UbTIup-M2XPURDT_25fdK7wDxUtwqL26wW_WahD8rT1PnKl_iYB0spTcFQ. Eran