 The discipline of customer loyalty marketing has been around for many years, but expansions from it merely being a model for conducting business to becoming a vehicle for marketing and advertising have made it omnipresent in consumer marketing organizations since the mid- to late-1990s.Some of the newer loyalty marketing industry insiders, such as Fred Reichheld, have claimed a strong link between customer loyalty marketing and customer referral.In recent years, a new marketing discipline called "customer advocacy marketing" has been combined with or replaced by "customer loyalty marketing."