In one aspect, a system includes a transaction handler to process transactions, a data warehouse to store data recording the transactions, a portal configured to communicate with a search engine and to provide a user interface to receive a request from a merchant, and at least one processor coupled with the data warehouse and the portal. In response to the request received from the merchant via the portal, the at least one processor identifies a set of first statistics based on search activities of the search engine, identifies a set of second statistics based on the transactions relevant to the search activities, and uses the portal to juxtapose the set of first statistics and the set of second statistics.