LiveJournal

LiveJournal provides OpenID, it doesn’t require any major settings in order to work, beside being defined on AUTHENTICATION_BACKENDS`:

SOCIAL_AUTH_AUTHENTICATION_BACKENDS = (
    ...
    'social_core.backends.aol.AOLOpenId',
    ...
)

LiveJournal OpenID is provided by URLs in the form http://<username>.livejournal.com, this application retrieves the username from the data in the current request by checking a parameter named openid_lj_user which can be sent by POST or GET.