(2007-08-04):
Thus far, I do not have any luck attaching Verisign openid to Plaxo account (both direct and delegation). Myopenid is known to work, including delegation.

Teng Ruo Hui (2007-08-11):
Verisign is able to attach to Plaxo now.

Eric Lexcellent (2007-08-30):
Hello, I'm working on a new OpenID provider, that shall be release shortly. How is it possible to attach to Plaxo? Thanks

Thomas Couey (2007-09-08):
The normal login page doesn't have an OpenID login box, only the one that you get when you navigate through the "Check it out" link, then click "Sign Up". There seems to be another login page that you can get to that has an OpenID login box, but it's not the one that you get to when you click the "Sign In" button on the main page.

Thomas Couey (2007-09-08):
Oh, and to top it off, they don't appear to properly implement delegation... and you can't use OpenID to login to the Outlook plugin, which means you can't use it to sync with Outlook... and... and... *sigh* Their support for OpenID is weak.

Steven Banks (2007-09-13):
Thomas you are correct, when you get to the sign in screen there is no OpenID login box. You only see that after signing in normally, then signing out. Agreed, not very intuitive.

Thomas DiGennaro (2007-12-11):
Repeated attempts to login to Plaxo using OpenID have failed for me. As far as I can tell, I have not been able to "claim" my Plaxo account with me open ID's I do see the "Use OpenID" box on the login page, but it does not result in login.

David Segonds (2008-01-19):
My openid is delegated to Verisign and I am unable to attach it to my existing plaxo account.

Tim Churchward (2008-01-20):
Does anybody know what login information to use with the Mac plaxo software?

openid2.0 

Login with your OpenID to submit your tags!