“…According to extant research, social networking sites (SNSs) are important platforms for displaying online prosocial behaviours such as knowledge sharing, opposition to cyberbullying, online voicing, holding online charities, promoting community safety, and active civic participation (Bhatti et al, 2020;Dai et al, 2017;Kuem et al, 2017;Lavertu et al, 2020;Son et al, 2016;Wu et al, 2017). To be more specific, organisational citizenship behaviour (OCB), originally introduced by organisational behaviour studies (Freidlin and Littman-Ovadia, 2020;Podsakoff et al, 2009) to describe employees' display of discretionary extra-role behaviour to help their respective organisations (Organ, 1988), has been particularly important in online communities (Chiu, Huang, et al, 2015;Son et al, 2016;Wu et al, 2017). Xu et al (2012) asserted that while OCBs are vital to physical organisations, they are even more essential to online communities because of the virtual nature, voluntariness, and self-organisation in these communities.…”