46. A system for building a user profile for a user, the system comprising: a computing device configured to label and store user registration information in a database as a set of demographic nouns; a computing device configured to analyze author-generated classification information regarding a user of at least one document of a set of documents and assign a set of first taxonomic nouns to characterize the user based upon the author-generated classification information; a computing device configured to examine a user-generated tag from a client computer characterizing the user of at least one document of the set of documents and assign a set of second taxonomic nouns to characterize the user based upon the user-generated tag characterization; a computing device configured to identify a method by which the user accessed at least one document of the set of documents from a content provider and assign a set of third taxonomic nouns to characterize the user based upon the method of access; a computing device configured to evaluate attributes related to the method of access and assign a set of fourth taxonomic nouns to characterize the user based upon the attributes related to the method of access; a computing device configured to process at least one document of the set of documents to extract a set of fifth taxonomic nouns to characterize the user; a computing device configured to aggregate the set of first taxonomic nouns, the set of second taxonomic nouns, the set of third taxonomic nouns, the set of fourth taxonomic nouns, and the set of fifth taxonomic nouns into a composite set of taxonomic nouns that represent the user; a computing device configured to build a user profile based upon the composite set of taxonomic nouns, the author-generated classification scheme, and at least one of the demographic nouns; a computing device configured to compare the composite set of taxonomic nouns with taxonomic nouns associated with a plurality of other user profiles corresponding to a plurality of other users; and a computing device configured to modify the user profile based on the comparison.
46. A system for building a user profile for a user, the system comprising: a computing device configured to label and store user registration information in a database as a set of demographic nouns; a computing device configured to analyze author-generated classification information regarding a user of at least one document of a set of documents and assign a set of first taxonomic nouns to characterize the user based upon the author-generated classification information; a computing device configured to examine a user-generated tag from a client computer characterizing the user of at least one document of the set of documents and assign a set of second taxonomic nouns to characterize the user based upon the user-generated tag characterization; a computing device configured to identify a method by which the user accessed at least one document of the set of documents from a content provider and assign a set of third taxonomic nouns to characterize the user based upon the method of access; a computing device configured to evaluate attributes related to the method of access and assign a set of fourth taxonomic nouns to characterize the user based upon the attributes related to the method of access; a computing device configured to process at least one document of the set of documents to extract a set of fifth taxonomic nouns to characterize the user; a computing device configured to aggregate the set of first taxonomic nouns, the set of second taxonomic nouns, the set of third taxonomic nouns, the set of fourth taxonomic nouns, and the set of fifth taxonomic nouns into a composite set of taxonomic nouns that represent the user; a computing device configured to build a user profile based upon the composite set of taxonomic nouns, the author-generated classification scheme, and at least one of the demographic nouns; a computing device configured to compare the composite set of taxonomic nouns with taxonomic nouns associated with a plurality of other user profiles corresponding to a plurality of other users; and a computing device configured to modify the user profile based on the comparison. 47. The system for building a user profile of claim 46 , wherein the user registration information characterizing the user of the document includes at least one of an item listed in a profile of the user and a technology implementation setting.