Our organization is using Google Apps (standard edition) and we’ve just implemented a WP site.
I’d love any input on anyone who’s used implemented Google Apps (in the last month or so) as the service for OpenID.
I tried the Janrain plug-in but am a little lost on what needs to be done outside of WordPress?
In WordPress Admin
On the Janrain Dashboard
Go to your wordpress blog and it should allow you to pick one of your configured providers for logging in and for registering.
An interesting article on the PHP, non-WP side of implementing SOS is here: http://www.merchantos.com/makebeta/php/single-sign-on-with-openid-and-google-part-1/
Might be a good start at a custom plugin.