35 Marketing list selection, acquisition, and maintenance for others; marketing list hygiene for others in the nature of removing duplicate data from the lists of others and correcting erroneous data in the lists of others; marketing list enhancement for others in the nature of adding supplemental or updated data to the lists of others; marketing list format conversion for others; direct marketing campaign management for others; data management for others; order processing and fulfillment for others; data integration for others in the nature of modifying databases to link similar data located at multiple locations and in multiple databases; order invoicing and cash disbursement for others; direct marketing research for others; marketing data modeling, scoring, and analysis for others; customer and prospective customer analysis and targeting for others; and information technology outsourcing services, namely, help desk maintenance and management for others, and client/server system and computer network maintenance and management for others