Twitter's business wasn't just built on advertising—it also generated hundreds of millions of dollars by licensing its massive real-time data stream. Companies could access public tweets as they were posted, opening the door to everything from market research to public safety and analytics. But that business also raised difficult questions about privacy, surveillance, and how public data should be used. It's one of the most controversial chapters in Twitter's history. Watch the full video here: youtu.be/3CQ4UqAUy3Q #twitter #technology #business #privacy #socialmedia