The Followup Purchase concept makes use of the DistributedPzn framework to increase sales of products we offer online. For instance, consider FoodTV's shooping site. If a person were to purchase the red Iron Chef t-shirt, we might like to target them to purchase the black Iron Chef polo shirt. To accomplish this, the sales confirmation page makes a call to the distributed personalization FollowupSalesAgent's set facility, indicating that this person might like to but the polo. This action is transparent, and requires a single line of html to be added to the page. Now, the sales agent will display an ad for the polo shirt with a link to the checkout page for that object. That object may set a new followup sales target for the user. And so on, and so on, and ...