This Medium Series thing is intriguing, and was just launched a couple of days ago. At first blush it may seem like yet another Snapchat Stories clone (similar to Instagram Stories and WhatsApp Stories and Steller Stories etc., etc.) ...but the difference is the Series doesn't disappear after 24 hours... and continues...
It's mobile-only though, just like SnapChat stories. You can't make a Medium story from the Web app or from opening medium.com in your Web-browser... (at least not at first....)
// the intro-video from Medium: https://youtu.be/VRAKqJjt3j8
// In-depth from WIRED: https://www.wired.com/2017/03/medium-series/
// the official PR brief-sheet from the Medium blog: [+]
// cc @ellowebdesign @ellodesign @ellowrites
// #socialmedia #writing // [fz_links]