COO of Bay Area-based stock trading app Robinhood answers cryptocurrency questions on Reddit FacebookTwitterEmail This Thursday, Dec. 17, 2020, photo shows the logo for the Robinhood app on a smartphone in New York. Patrick Sison/Associated Press The stock trading app Robinhood made headlines this year with the Gamestop meme stock fiasco, a Reddit-born scheme to punish short-sellers and make a few pranksters quite a lot of money. In a controversial move, the app temporarily paused trading during the meme stock boom and made quite a lot of Redditors unhappy. So it seemed like a disastrous ide...