Q: How do I use my LiveJournal account to log in to another website with OpenID?
Summary:

Answer: Every LiveJournal account can be used as an OpenID identity. When the other site asks for your OpenID URL, use [[journalurl]]. You will then be redirected to LiveJournal, where you will be asked whether LiveJournal should identify you to the other site. You will also be asked to choose whether this identification should be given once only, or automatically.
If you choose to allow another site to verify your OpenID automatically, you can later review and edit the list of sites that are allowed to verify your identity.
Troubleshooting
If you have customized your journal using a custom style, you may receive an error message if you try to use your LiveJournal URL as your OpenID identity on another site.
In order to fix this problem, you will need to edit your customizations in one of the ways listed below. In all cases, you should add the property or function or line between the <head> and </head> tags.
- S1 only: You can add the %%head%% property to your customizations.
- S2 only: You can add the $this->print_head() function to your customizations.
- Either S1 or S2: You can add the following line in your journal:
<link rel="openid.server" href="http://www.livejournal.com/openid/server.bml" />