OpenID is a great idea as it moves us closer to not having to remember a million user id's and passwords. Way back in February of this year Kevin Rose of Digg.com announced that Digg would be supporting OpenID later this year (click here to read about the original announcement). At the time I was very excited, but unfortunately it doesn't look like we will be seeing it this year (unless one of you readers knows something that I don't).
This got me looking around at various popular social networks and web applications and the only major site that I have found that allows for OpenID login is DZone (which make since as it is a social network for developers). As for the other major social networks (such as YouTube, MySpace and Facebook), unfortunately there has been no adoption of OpenID.
Hopefully early next year we will see Digg.com put OpenID functionality on the site. This would make it the largest Social network (and one of the top sites on the internet, according to Alexa it is currently ranked 117) to place OpenID functionality on the site. Once this is done hopefully many more sites like MySpace and GMail will follow suite and the web will start to become a place where we can always have a single sign on (except perhaps on Microsoft affiliated sites). Well, I can always hope at least.