A common contact list
has helped power applications like Gmail, Google Reader, and Google Calendar. And now, with
the launch of the Google Contacts Data
API, we're opening up this contact list to your applications as well.
Based on AtomPub, the Contacts API can be used to safely read, create, edit,
and delete contact information stored with Google, all while keeping users' passwords private
via delegated authentication and authorization. Learn the details from Sebastian Kanthak in
his announcement
post on the Google Data APIs blog, and join the conversation on the Contacts API Group.