PROGRAMMATIC DISCOVERY OF COMMON CONTACTS

A common contact identification system. The common contact identification system can include at least two contact lists, a comparator for comparing contacts in each of the contact lists, and a common contact list including contacts matched by said comparator. Each contact list can include a plurality of contacts. Each contact list further can have a publicly accessible interface through which the contacts can be accessed remotely. As such, the comparator can identify matching contacts in each of the contact lists.