19. The system of claim 15 , including a processor to generate a set of search criteria from the plurality of search criteria based on matching associated source and category information, for each of the plurality of unique source and category information combinations.
19. The system of claim 15 , including a processor to generate a set of search criteria from the plurality of search criteria based on matching associated source and category information, for each of the plurality of unique source and category information combinations. 20. The system of claim 19 , including a ranking module to rank the set of search criteria based on a count of instances of each search criterion received from the plurality of users, to generate a ranked set of search criteria.