“…(2) the measurement of engagement with DMOs/NTOs' SNSs [9,21]; (3) the analysis of the drivers of travelers' engagement with and contribution to DMOs/NTOs' SNSs [42,43]; (4) new methodologies to measure travelers' attitudes towards destinations and attractions by means of SNSs' content analysis [20,22,30,44]; (5) tourists' destination experiences with DMOs' SNSs [45][46][47][48][49]; and (6) the impact of DMOs' SNSs on online travelers' attitudes, visit and recommendation intentions, reactions to marketing and advertising messages, and bookings [29,31,33,[50][51][52][53][54][55][56][57][58]. Overall, and regardless of the topic covered, there is a prevalence of studies on Facebook (31 studies), Twitter (21 studies), YouTube (15 studies) and TripAdvisor (10 studies).…”