There’s a guy on Reddit who built a scraper that watches Craigslist for used cars priced way below market. The moment one shows up, he gets an alert. He started flipping cars on the side and eventually turned the scraper into a paid tool. Cool story. But most of us have no idea how to build one. So I started thinking, what’s the version of this idea that doesn’t need any code? And I think I found it. Flipping stuff from Facebook Marketplace or Craigslist is a real side hustle. People make a...