Google moves towards single sign-on with OpenID

Currently users are required to create individual passwords for many websites they visit, but users would prefer to avoid this step so they could visits websites more easily. Similarly, many websites on the Internet have asked for a way to enable users to log into their sites without forcing them to create another password. If users could log into sites without needing another password, it would allow websites to provide a more personalized experience to their users.

Full article here.