I know this is going to be controversial and I know I may have missed something, but here goes...
As a website owner, why should I allow OpenID logins on my site? I see one major disadvantage: I don't have any contact info for my users. This breaks the primary link between me and my users.
I can see OpenID being used for many scenarios, but I don't think it's the ultimate cure of login cancer it's hyped up to be.
Again, I'm all ears to learning something new here.
Thanks,
Pierre
If OpenID meant giving up the user database (the crown jewels of any site) it wouldn't have a chance of being adopted by anyone.