Users play an increasingly important role in product and service innovation. Finding the right users can require substantial search effort. Network searches are increasingly popular in searching for rare lead users. In these searches, implicit and inexact referrals have been found to comprise a...

This paper explores the role of intermediaries in the development and appropriation of new technologies. We focus on intermediaries that facilitate user innovation, and the linking of user innovation into supply side activities. We review findings on intermediaries in some of our studies and...