In January 2005, PEMFellows.com was created to unify fellows in pediatric emergency medicine. Since then, the website has expanded, contracted, and focused to adapt to the interests of the pediatric emergency medicine practitioner during the internet boom. This review details the innovation of the PEMNetwork, from the inception of the initial website and its evolution into a needs-based, user-directed educational hub. Barriers and enablers to success are detailed with unique examples from descriptive analysis and metrics of PEMNetwork web traffic as well as examples from other online medical communities and digital education websites.