More mailers use the cooperative database services, but not all marketers use them effectively. There are many things to consider, such as should you stick with one co-op, or play the field? Is it best to choose a co-op for its size, or should the decision be based on complexity? Our panel of experts will help you determine what's best for your lists when it comes to choosing a co-op, as well as the latest and greatest these databases have to offer catalog mailers.