“…While these programs can be traced to the "frequentflyer" programs started by airlines in the 1980s (Kopalle and Neslin, 2003), they have become more widespread and commanded more attention during the 2000s. The goal of these programs can be to cross-sell (for example, using recommendation systems; Ansari, 2013;Ansari, Essengaier, and Kohli, 2000), enhance loyalty (loyalty programs; Bijmolt, Dorotic, and Verhoef, 2010;Dorotic, Bijmolt, and Verhoef, 2012;Rust, Zeithaml, and Lemon, 2000), prevent churn (churn management programs, Neslin et al, 2006a), improve service (call center management; Sun and Li, 2011), or make the best use of the firm's multiple channels (customer multichannel management; Neslin et al, 2006b). These areasloyalty programs, churn management programs, call center management, multichannel customer management, recommendation systems -are very fertile grounds for research.…”