The present disclosure provides a communication system and method, among other things. As a non-limiting example, the method includes enabling access to entries of personal digital data for a plurality of users; enabling at least some of the personal digital data for the plurality of users to be retrieved by a query that contains an identification of a first user and authentication information associated with the first user; receiving a group identifier that is stored with reference to personal digital data of the first user; and distributing relationship digital data that describes a relationship between the first user and the second user based on the existence of the group identifier.
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