How do I implement OpenID in my web application?

Question

Does Stackoverflow create a new OpenID when a user registers with an email address (i.e. does not provide an existing OpenID)? How do you do that? Do you have code example

Answer 1

I think you are mis-understanding OpenID, the process of registering and OpenID is the responsibility of the user, you'll note that there is no place to signup here without an OpenID.