It is necessary to grasp and utilize consumer's needs for firms to improve existing products and developing new products. Especially, collaboration with consumers for product innovation is indispensable. On the other hand, social media has been spreading all over the world. Network communities...

This study examines preceding factors of user innovation behavior using a case of smartphone applications toexamineindirect and direct effects of consumer attitude on user innovation. Specifically, this study focuses ontwo aspects of the user innovation evaluation:quality and quantity. Quality...