Previous research has firmly established the importance of informal social networks in facilitating knowledge flows in research and development (R&D) settings. However, the explosion of Web technologies in recent years have ’flattened’ the planet and dramatically altered our understanding of what constitutes a social network. Despite this, current research has neglected to examine how Web technologies have impacted knowledge flows in R&D. To address this research gap, we revisit the highly influential technological gatekeeper theory. Drawing on social network analysis (SNA) and interview evidence from a medical devices R&D group, we find that the gatekeeper role is still vital, but no longer needs to be performed by a single individual. Instead, the modern R&D group can keep abreast of the latest technological advances through a combination of Web-enabled internal and external communication specialists. A unique contribution this paper makes to the IT-enabled social network literature is the development of an updated conceptual framework of how the gatekeeper role is performed in the modern R&D group.