The folks at Read/Write Web have a great analysis of AOL’s recent move to support the OpenID initiative. AOL has integrated with OpenID, adding 63 million users in a bid to make AIM handles sticky.
Digg also just announced they are joining OpenID.
OpenID is one of the technologies that I am tracking as a key enabler of Web 3.0.
Social tagging: Security > Social Networks > Web 2.0 > Web 3.0 > Weblogs