New paradigms, such as Open Innovation (Chesbrough, 2003) and Web 2.0 (O'Reilly, 2004) as well as Living Labs operating as a User Centred Open Innovation Ecosystem (Pallot, 2009), promote a more proactive role of users in the R&D process. However, a number of existing methods for involving users are abundantly described in the literature, such as Lead User (Von Hippel, 2005), User Driven Innovation (Von Hippel, 1986), User Centred Design (Von Hippel, 2005) and User Created Content (O'Reilly, 1998) as well as User Co-Creation (Prahalad & Ramaswamy, 2000). This paper explores the domain landscape of Living Lab research, based on the landscape of human-centred design research (Sanders & Stappers, 2008; Sanders, 2008) and later introduced in the domain of Living Lab research (Mulder & Stappers, 2009). It also discusses the links with existing theories such as Social Capital Theory (Nahapiet and Ghoshal, 1998) and Social Cognitive Theory (Bandura, 1986) as well as Socio-Emotional Intelligence Theory (Goleman, 1998). It also explores the creation of User Group Experience concept for bringing the socio-emotional perspective (Norman, 1995; 1998; 2004; 207; Goleman, 1998) into User Experience (Fleming, 1998) that appears too much focusing on individual users and usability.