For a little time yet, I have been looking at the virtual identity phenomenon on the Web. Well, last week-end, I just participated to my very first CodeFest which was focusing on implementing OpenID on different CMS.
And good news ! We have succeeded ! It is still a proof of concept but OpenID login is now working with XOOPS ! I should install a test site soon to demonstrate what it does !
To learn more about OpenID : http://openid.net/