The article presents information on e-learning. Most marketers believe that it's customers who decide what they want-in the case of learning, how they want to learn: book, audio, video, ILT, e-learning, and so forth. Among marketers, there is the saying, "Seminar buyers are seminar buyers, tape buyers are tape buyers, and book buyers are book buyers." When marketers select mailing lists, one see a tremendous differential in list performance based on the preferred delivery vehicle for learning-not that there isn't any crossover.