Contacts importer: Import contacts from Web mail accounts

This class can be used to import contacts from Web mail accounts.

It generates links to pages where the user can authenticate on either Gmail, Hotmail, MSN Windows Live or Yahoo.

Once the user authenticates, the user returns to a page with a script that calls the class so it receives request values that can be used to retrieve the contacts from the Web mail accounts using their Web service APIs.

You will need to create applications for Yahoo and Windows Live to obtain API keys and secret phrases. For Yahoo you need to get your application access to read address books in applications settings.