[OpenID] Emails and IIW

[Martin Atkins]

David Recordon wrote:
> Figuring that we should certainly have a working session at IIW around  
> using email address style identifiers with OpenID.  I'm happy to  
> "lead" it (in terms of making sure it gets up on the board at a sane  
> time).  I'll also work on compiling a wiki page where we can try to  
> agree on the problem, list assumptions, questions, approaches, etc  
> that I can tease out of the ongoing discussion.
> 

Yes, this sounds like a great idea, though I think we should try to 
whittle this down to a few key issues beforehand so that the session 
doesn't just turn into a big brawl.

Some current debates that spring to mind are:
  * Should openid.identity be a mailto: URL, or an http: or https: URL 
derived from the email address somehow?
  * Should discovery from DNS be supported?
  * Do we want to make a general email-to-URL mapping solution, or 
something specific to OpenID?

I'm thinking that the best way to proceed with this would be to make a 
matrix similar to what we did with identifier recycling to try to hash 
out both the pros and cons of each possibility for each decision.