As comics have taken over the mainstream, fandom has become larger, more diverse, and more like the rest of popular culture, for better or worse. Our conventions are huge, our economic clout drives the entertainment industry, and our disputes have become entangled with culture-war politics. What's next? Rob Salkowitz (Comic-Con and the Business of Pop Culture), Brett Schenker (Graphic Policy) and Heidi MacDonald (The Beat) use hard data to explore the changing demographics of fandom in its social, economic, and political dimensions. The Washington Post'sMichael Cavna (Comic Riffs) moderates.