“…To the best of our knowledge, however, research has so far mainly investigated emergent developers [14,31,42] and emergent knowledge [46], while only few and more recent works exist that start to investigate the effect of emergent contributors on requirements [26], across organizations [24,28], and its implications with respect to transparency [8,15]. We consider this an important research direction, since stakeholders with in-depth domain knowledge, the implicit knowledge about customer needs, their business domain and the system's environment [9], must participate even when they span team-or geographic boundaries [5].…”