“…Word‐of‐mouth (WOM) occurs when consumers share information informally with one another about products, brands, or services (Arndt, ; Godes et al, ; Granovetter, ; Katz & Lazarsfeld, ; Westbrook, ). This non‐commercial source of information has a greater impact on consumers than firm‐generated information (e.g., Bickart & Schindler, ; Bruce, Foutz, & Kolsarici, ; Buttle, ; Day, ; Engel, Kegerreis, & Blackwell, ): it alters consumers’ attitudes, intentions, and choices (e.g., Arndt, ; Herr, Kardes, & Kim, ; Sheth, ), and therefore affects firms’ sales (e.g., Babić Rosario, Sotgiu, De Valck, & Bijmolt, ; Floyd, Freling, Alhoqail, Cho, & Freling, ; You, Vadakkepatt, & Joshi, ).…”