Ever wonder what all goes behind the making of mailing lists? It’s really not as simple as you think, and there is a lot of work in collecting data, orgainizing, compiling that is required before a cohesive mailing list is formed. One of the leading companies that has been in the business is Martin Worldwide, a Westlake, CA based company that has created ResponseCom, one of the most successful and innovative mail list systems, which combines US Response and US Consumer databases to create a database that has more than 100 demographic and psychograpic options to select from. Mailing lists are serious business to Martin Worldwide and their client list is a veritable who’s who of Fortune 1000 companies.