Using insights from the user innovation and knowledge management literature, we develop and empirically illustrate a typology of user inputs for innovation. Based on the knowledge complexity and uncertainty associated with a particular innovation, we propose four user input types and link them...

Crowdsourcing ideas from users in online communities are becoming common practice in the development of high-tech products. While most studies focus on sourcing ideas from ordinary users (i.e., non-experts), high-tech firms commonly rely more on ‘lead users’. Despite the importance of lead...