“…In friend request decisions, users consider the characteristics of the requestors in deciding whether or not to accept the requestors into their online social networks. For example, users are more likely to accept known requestors (Chen, Geyer, Dugan, Muller, & Guy, 2009), or those with whom they have minimal offline interaction (Strater & Lipford, 2008). When unknown persons send friend requests, users rely on common friends, interesting content (for instance, photos, lists, interests, and so on) and similarity of location (Ben Sassi, Mellouli, & Ben Yahia, 2017;Chen et al, 2009;Guy, Ur, Ronen, Perer, & Jacovi, 2011), as well as the social clues (Wisniewski et al, 2012).…”