I started posting questions to SO using an "unregistered" account some months ago. (Very convenient, by the way.) Now I want to register and establish a more permanent account. Trouble is, I cannot find a way to add a login/pass or OpenID to the account. When I go to the user page (http://stackoverflow.com/users/182237) and click on Register, and then log in through Google, it creates a new account rather than associating the OpenID with my existing (unregistered) one. Am I just stuck?