This document summarizes a lecture on using social media for business-to-business innovation. It discusses how social media provides new opportunities for real-time collaborative design and virtual face-to-face interactions using virtual objects. The research aims to study how companies operating in business-to-business markets can use social media in their customer interface and innovation processes, as well as how social media can be used to involve external actors in innovation. The implications are that social media can improve customer knowledge and understanding in business-to-business contexts through new ways of interacting with customers, and can help reduce the time needed to develop products.