Abstract: A computer system adapted to receive at least one first content item, a second content item, and corresponding rules, and to process at least one query based at least in part on the first content item and the second content item and the first content item rule and the second content item rule, and to retrieve at least one result of the query, a storage medium to store the first content item and the second content item and the first content item rule and the second content item rule and the query and the result, and an output device to report the query and the result, wherein every content item ownership person's access to at least one content item is limited by at least one content item rule that is imposed by a person other than such content item ownership person.

Abstract: A machine, manufacture, process, and product produced thereby, as well as necessary intermediates, which in some cases, pertains to computers and data processing. Illustratively, there can be a computer system adapted to receive at least one first content item, a second content item, and corresponding rules, and to process at least one query based at least in part on the first content item and the second content item and the first content item rule and the second content item rule, and to retrieve at least one result of the query, a storage medium to store the first content item and the second content item and the first content item rule and the second content item rule and the query and the result, and an output device to report the query and the result, wherein every content item ownership person's access to at least one content item is limited by at least one content item rule that is imposed by a person other than such content item ownership person.