Hi, all. I wanted to let everyone know that I've checked in an OpenID extension into MediaWiki Subversion (in extensions/OpenID).
The extension lets users log in with an OpenID (http://www.openid.net/) instead of a username and password. An OpenID is a special URL that people can use to log in to a Web site. The extension also lets users who have an account on the wiki log in to other OpenID-aware Web sites with their wiki user page as their OpenID.
This is MediaWiki, not Wikipedia itself. So it's not too useful yet, but it's still a step.