Group items tagged

The Google Contacts Data API allows client applications to view and update Contacts content in the form of Google Data API feeds. Your client application can request a list of a user's contacts, edit or delete content in an existing contact, and query the content in an existing contact. Here are some of the things you can do with the Contacts Data API: Synchronize Google contacts with contacts on a mobile device Maintain relationships between people in social applications Give users the ability to communicate directly with their friends from external applications using phone, email, and IM