Suggestive selling is particularly effective when the seller knows the current interests of the buyer. Retailers arrange products to
enhance cross-selling by placing complementary items in close proximity. On-line retailers are freed from physical layout and can
directly suggest products related to the one a customer is viewing. By using the targeted customer’s current navigation as an
ephemeral indication of interest, such systems use item-to-item correlation and community purchase history to passively display
suggestions to the targeted customer.