Allow, but.. Username should an arbitrary object-id, service generated. This is OOD, isn't it ? Additionaly user should be given the possibility (not obligat

Allow, but.. Username should an arbitrary object-id, service generated. This is OOD, isn't it ? Additionaly user should be given the possibility (not obligation) to provide: - one or more email addresses (primary & secondaries) - a unique user chosen ID - 30 or so chars. - a user chosen Display Name, not unique - a password (optional too) User should be able to login using their optional password and either : - an email address or - their user chosen unique ID or - their system generated unique ID If login fails because user is not known, user should be directed to a pre-filled "register" page ! Never ask user to re-enter data just typed a page before. Only the object-id and Display Name should be public by default. Display Name should default to unique user, name part of email address or Anonymous. There should be a log of failed & successful logins, with optional email delivery/alerts.