online retailers have thus been gaining increasing market power in influencing customers’ purchases (i.e., Inversini and Masiero, 2014, Silva, 2015, Yen and Tang, 2015) and have improved market transparency and uncertainty for travellers (Toh, Raven, & DeKay, 2011). For this reason, their role is now considered an infomediary (Chen, Yang, & Wang, 2015) because their capability to add value in transactions depends primarily on collecting and processing information about prices, destinations and travellers’ reviews.