Abstract: A computer implemented method of processing data containing information about relationships between contacts and a community of contact owners, comprises: collecting data including contact information, contact owner information and one or more values related to strength of a relationship between the contact and the contact owner; evaluating the strength of the relationship based on the one or more values; and storing the collected data and evaluated strength in a computer database. A method of keying a database, comprises: building a database of records, each containing information about an entity, and each of which include a domain name field; and setting the domain name field as a key field; whereby a record for an entity is found by reference to a domain name.