OpenID Endpoints List

AOL - http://openid.aol.com/username

Blogspot - http://username.blogspot.com/

Certifi.ca - http://certifi.ca/username

Chimp - http://chi.mp/ (tested as specified by the site ... but not working ????)

Claimid - http://claimid.com/username

Facebook - ????

Flickr (yahoo) - http://flickr.com/username/ 

Google - https://www.google.com/accounts/o8/id
Hyves - http://www.hyves.nl/

Identitude - https://username.identitu.de   (Outdated - Site is now for sale ... )
Linuxfeed (Myopenid) - https://openid.linuxfeed.org/

Livejournal - http:// username.livejournal.com
MyID - https://myid.net/ 

MyOpenID - https://myopenid.com/ 

Myspace - http://www.myspace.com/username

Myvidoop - http://username.myvidoop.com
MyDocomo - https://i.mydocomo.com
Steam - http://steamcommunity.com/openid/username

Technorati - http://technorati.com/people/technorati/username/

Tinyid (dead) - http://tinyid.us/username
Typepad - http://profile.typekey.com/username
Virgilio - http://www.myvirgilio.it | http://username.myvirgilio.it

Verisign - http://pip.verisignlabs.com/ 

Wordpress - http://username.wordpress.com

Yahoo - http://me.yahoo.com/

References: http://openiddirectory.com