“…However, motivations underlying participation in self-engagement activities have been investigated in different empirical settings, such as open-source software development (Linux case in Hars and Ou, 2001; Apache Projects in Roberts et al, 2006;in Lakhani and Von Hippel, 2003), open-knowledge communities (Wikipedia in Rafaeli and Ariel, 2008), the communities of practice (Wasko and Faraj, 2005), the web platform for virtual NPD (Füller et al, 2010;Fuller, 2006;Rohrbeck et al, 2008;Ihl et al, 2012), customer communities (Füller et al, 2008) and online innovation communities (Janzik and Herstatt, 2008).…”