“…Within the literature covering collaborative tagging in e-learning, there are several existing works that have investigated the expected benefits of tagging when applied in describing educational resources: PLEM (Verpoorten, Chatti, Westera, & Specht, 2010), CROKODIL (Anjorin et al, 2011), SOAF (Cernea, Del Moral, & Labra Gayo, 2008), TaCS (Lavoué, 2012) and TAK system (Chen, Chen, & Sun, 2014).…”