A process that arranges information warehoused at individual accounting and tax preparation firms at a central location for the purpose of marketing information. Data contained at these firms have qualitative and quantitative characteristics that are different from data archived at the Internal Revenue Service or other tax authorities. This fact makes the data valuable as data in two ways. First the data can be exchanged to provide new revenue streams. Secondly, these data, if grouped into data warehouses of other firms, has value as pure data, not just customer lists. These data may be sold or rented creating additional revenue streams for their originators. The purchasers of this bulk data are interested in using this data in the field of data mining. Data mining is a technique of analyzing vast amounts of information to uncover relationships to predict events and has wide application in many areas of the economy.