A relationship management system uses a database to store contact information related to a number of contacts and to store a number of folders, each of which reference one or more of the contacts within the database. The relationship management system also stores a set of contact-user pairs defining...http://www.google.de/patents/US7613695?utm_source=gb-gplus-sharePatent US7613695 - Relationship management system that provides an indication of users having a relationship with a specified contact
