8. The system of claim 1 , wherein the selected interest node in the profile data structure includes a qualifier, said qualifier being a typed-attribute usable by logic to rank information files, and including said logic executable to rank information files using said qualifiers, and to select information files for the filtered set using said rank.
1. A non-transitory data processing system comprising: storage to store information files and associated metadata, the metadata indicating information about the associated information files, said metadata including typed-attributes usable in processing the information files; a database including a plurality of individually addressable user records, each including respective profile data structures, the profile data structures including therewithin a plurality of named interest nodes which are user-tunable channels, each named interest node data structure being logically connected with at least one target data structure, each target data structure being logically connected with at least one typed-attribute which can be logically connected by the user to any of said plural user-tunable channels at the user's option; logic executable to process the information files and associated meta data in response to a selected named interest node to produce a filtered set of information files using said at least one target in said selected named interest node, said meta data being produced by a person or an analyze engine performing analysis, extraction or classification on the associated information files; logic executable to compose and send executable documents via a network interface according to a communication protocol to a user terminal for rendition of a graphical user interface at a user terminal including display to the user of the interest node names, wherein the executable documents comprise data specifying a representation of the filtered set of information files and a representation of user selectable mark-up identifying typed-attributes represented by said metadata associated with the filtered set of information files; and logic to receive messages via a network interface according to a communication protocol indicating selection of particular mark-up in the graphical interface at the user terminal, and executable to modify the selected named interest node which is a user-tunable channel in response to said messages to add a target corresponding to the typed-attribute identified by the particular mark-up.