1) The document discusses using virtual worlds to facilitate knowledge transfer between organizations by leveraging their ability to foster intrinsic motivation and support informal social interactions. 2) It hypothesizes that virtual worlds provide higher intrinsic motivation than traditional computer-supported collaborative work tools, and that higher intrinsic motivation better supports social aspects like trust and informal communication that enable knowledge transfer. 3) Virtual worlds stimulate intrinsic motivation through elements like competence, autonomy, relatedness, fantasy, and curiosity according to theories of motivation. This intrinsic motivation may help overcome challenges with knowledge transfer posed by traditional tools.