23. A system configured to associate base content with relevant content and serve the base content with the relevant content to a user system, the system comprising: A processor; a plurality of property servers configured to provide the base content; a content-management system coupled with the plurality of property servers and configured to receive the base content from the property servers and generate at least one association between the base content and the relevant content, wherein the content-management system includes: a parsing module configured to parse the base content to form parsed base content; a unit-dictionary module coupled with the parsing module and including a plurality of query units; a query processing engine coupled with the unit-dictionary module and configured to receive and remove query units from the plurality of query units in the unit-dictionary module; a unit-extraction module coupled with the unit-dictionary module and configured to extract query units included in the unit-dictionary module from the parsed based content, wherein the query units extracted from the base content are referred to as the extracted-query units; a unit-ranking module coupled with the unit-extraction module and configured to rank the query units based on relevance scores and revenue-generation amounts for the query units, wherein the relevance scores of the query units reflects a number of times the query unit appears within the base content; and a unit-matching module coupled with the unit-ranking module and configured to generate at least one association between the base content and the relevant content based on whether the extracted-query units and the query units associated with the relevant content are the same; and a client browser coupled with the unit-matching module and configured to receive the base content and the relevant content and present the base content and relevant content as a published web page, wherein the relevant content includes at least one advertisement.
23. A system configured to associate base content with relevant content and serve the base content with the relevant content to a user system, the system comprising: A processor; a plurality of property servers configured to provide the base content; a content-management system coupled with the plurality of property servers and configured to receive the base content from the property servers and generate at least one association between the base content and the relevant content, wherein the content-management system includes: a parsing module configured to parse the base content to form parsed base content; a unit-dictionary module coupled with the parsing module and including a plurality of query units; a query processing engine coupled with the unit-dictionary module and configured to receive and remove query units from the plurality of query units in the unit-dictionary module; a unit-extraction module coupled with the unit-dictionary module and configured to extract query units included in the unit-dictionary module from the parsed based content, wherein the query units extracted from the base content are referred to as the extracted-query units; a unit-ranking module coupled with the unit-extraction module and configured to rank the query units based on relevance scores and revenue-generation amounts for the query units, wherein the relevance scores of the query units reflects a number of times the query unit appears within the base content; and a unit-matching module coupled with the unit-ranking module and configured to generate at least one association between the base content and the relevant content based on whether the extracted-query units and the query units associated with the relevant content are the same; and a client browser coupled with the unit-matching module and configured to receive the base content and the relevant content and present the base content and relevant content as a published web page, wherein the relevant content includes at least one advertisement. 27. The system of claim 23 , wherein the relevant content is pointed at by a set of links that are served with the base content.