American Demographics: This site provides a directory of marketing experts. Articles and search for the American Demographics magazine. http://www.demographics.com   

American Marketing Association: The site of a major professional association in marketing. http://www.ama.org/    

Association of Direct Marketing Agencies: A site providing links and information directed to professionals and users of direct marketing. http://www.cyberdirect.com/ADMA    

Direct Marketing Association: A site providing information of interest to professionals in direct marketing. http://www.the-dma.org    

MarketPlace for Marketing Services: Information and hotlinks to finding marketing services available to Internet marketers and professionals. http://www.imarketinc.com/home8221    

Sales and Marketing Executives International: This organization is the oldest association for sales and marketing management. The impressive site provides articles, forums, and business directories. The search engine of marketing articles numbers over 4,000. A search for the word prospecting yielded 32 articles and chapters. http://www.smei.org   

Sales and Marketing Network: Information and hotlinks for professionals in sales, sales management, and selling skills. The site includes hundreds of articles organized under topics such as direct marketing, incentives, promotions, events, meetings, travel, sales management, and training. http://www.info-now.com   

Trade Show Central: A site to find information on more than fifty thousand trade shows worldwide. You can even register for shows online. http://www.tscentral.com   

U.S. Census Bureau (U.S. Department of Commerce): This site is overwhelming. There is more economic, demographic, and social data and information then anyone can absorb. Try the "Subjects A-Z" list to narrow your topic of interest. http://www.census.gov/