Who will own the web's primary identity model. Facebook with it's 350 million members has made Facebook connect so popular, that Yahoo now has heavy facebook Connect integration and relies heavily on the platforms users to use this feature as a primary sign-in tool and share direct updates with all their friends.
Google has now signed up with Twitter to do something on the same lines. Google Friend connect with it's 9 million websites is now allowing users to signify with their Twitter users name and password. Once you join a new site you can directly tweet updates to your Twitter contacts.
Now that it's launched we will need to wait and see what users have to say about it.