Welcome to the Acute Coronary Syndrome (ACS) Module! After carefully reviewing all relevant posts from the top 50 sites of the Social Media Index, the AIR Team is proud to present the highest quality online content related to ACS emergencies. 13 blog posts within the past 12 months (as of July 2018) met our standard of online excellence and were curated and approved for residency training by the AIR Series Board. We identified 2 AIR and 11 Honorable Mentions. We recommend programs give 5.5 hours (about 25 minutes per article) of III credit for this module.