suraj.sun writes with this excerpt from Ars Technica: "Mozilla has announced the availability of an experimental new add-on for Firefox that is designed to import information about the user's contacts from a variety of Web services and other sources. The add-on makes contact details easily accessible to the user and can also selectively supply it to remote Web applications. ... After the add-on has imported and indexed the user's contact data, it becomes available to the user through an integrated contact management tool that functions like an address book. One of Mozilla's first experiments is an autocompletion feature that allows users to select a contact when they are typing an e-mail address into a Web form. ... To make the browser's contact database accessible to Web applications, the add-on uses the W3C Contacts API specification."