The World Wide Web has grown at a spectacular rate as a medium for promoting
and marketing products and services. At the same time, little is known about the
effectiveness of advertising on the Internet. Yet, the Web offers unique, but so far largely
unexplored, research opportunities for measuring and analyzing the effectiveness of
promotional content. In this paper, we develop and apply a conjoint analysis-based
methodology to evaluate the design and the effectiveness of promotional content on the
Web. This methodology is shown to be ideally suited for this purpose by virtue of its
unobtrusiveness, external validity, large sample sizes, timeliness, as well as its low
implementation cost.