“…Over the course of the subsequent decades, a profusion of social annotation tools has been developed and studied. These tools, including WebAnn (Brush et al, 2002), HyLighter (Lebow et al, 2011), EDUCOSM (Nokelainen et al, 2003), eLAWS (Glover et al, 2007), PAMS 2.0 (Su et al, 2010), and many more, helped progressively refine how a social annotation system might best work in different contexts and for different purposes, including education. Wolfe (2008) has summarized the results of this phase of development as follows.…”