Computer software for computer software for reviewing database information on telephone directory advertising rates and data, for report generation in connection with telephone directory advertising rates and data, and for customer review of telephone directory advertising rates and data; Prerecorded magnetic data carriers featuring a database of information on telephone directory advertising, telephone directory advertising rates and data, and computer software for reviewing database information on telephone directory advertising rates and data, for report generation in connection with telephone directory advertising rates and data, and for customer review of telephone directory advertising rates and data; prerecorded digital data carriers featuring a database of information on telephone directory advertising, telephone directory advertising rates and data, and computer software for reviewing database information on telephone directory advertising rates and data, for report generation in connection with telephone directory advertising rates and data, and for customer review of telephone directory advertising rates and data