If it were easy to podcast, everybody would have one. And it is, which is why it seems like everybody does. The medium’s extremely low overhead — just a bare minimum of technical professionalism and a winning personality can turn the hobby of a mid-career comic looking to reinvent himself, or two friends who love to banter about true crime, or disaffected Twitter leftists looking to vent their collective spleen, into a lucrative media empire — makes it an almost irresistible outlet for anyone with something to get off their chest and even a mild taste for the possibility of stardom.