15. A system comprising: a communication module to receive a plurality of search criteria from a plurality of users respectively the plurality of search criteria including a first search criterion that is respectively received from at least two of the plurality of users the plurality of search criteria to be applied to a common information repository; an association module to associate source information and category information with each of the plurality of search criteria, the association module including a category information identifier to identify a category of a plurality of categories into which information in the common information repository is categorized, and a source information identifier to identify a source of a plurality of sources via which the plurality of search criteria are received and communicated to enable the communication module to receive the plurality of search criteria; a memory to store each of the plurality of search criteria in association with the source information and the category information; and a counting module to maintain a count of instances of a first search criterion received from the plurality of users, for each of a plurality of unique source and category information combinations, the counting module to maintain a count of instances of the first search criterion received from the at least two of the plurality of users for each of a plurality of unique source and category information combinations.
15. A system comprising: a communication module to receive a plurality of search criteria from a plurality of users respectively the plurality of search criteria including a first search criterion that is respectively received from at least two of the plurality of users the plurality of search criteria to be applied to a common information repository; an association module to associate source information and category information with each of the plurality of search criteria, the association module including a category information identifier to identify a category of a plurality of categories into which information in the common information repository is categorized, and a source information identifier to identify a source of a plurality of sources via which the plurality of search criteria are received and communicated to enable the communication module to receive the plurality of search criteria; a memory to store each of the plurality of search criteria in association with the source information and the category information; and a counting module to maintain a count of instances of a first search criterion received from the plurality of users, for each of a plurality of unique source and category information combinations, the counting module to maintain a count of instances of the first search criterion received from the at least two of the plurality of users for each of a plurality of unique source and category information combinations. 23. The system of claim 15 , wherein the association module is to associate language information with each of the plurality of search criteria.