Smart phones and digital distribution have made it easier to get into the radio game. After the success of Serial, it seems like everyone’s talking about podcasts. But what does it take to make a hit show? And what do a host of new, independent programs mean for good ol’ radio? Alex Blumberg on Our Podcast Future; What About Public Radio?; It's a Gabfest - Emily Bazelon; Sounds, Original at WFMU; BookMark: Samuel Scheffler on "The Children of Men"; On Our Minds: Keeping Speech Free.