Abstract: A method and system is provided for obtaining, verifying, maintaining and using consumer information of interest including consumer demographic information and consumer transaction information. The information is obtained with the consent and participation of the consumers, which ensures that the resulting databases do not include redundant records, thus reducing the amount of database storage required for the databases and enhancing the ability to search and process the information stored therein. Because consumers provide the system and method with access to their transaction service providers, the system and method can provide the clients of the system with the ability to measure the success of their marketing campaigns using the system.