Janice West discusses how Twitter has evolved from its original intended use. Originally conceived as a side project for status updates from companies, Twitter is now used to share personal moments, spread news and information in real-time, and for businesses to communicate with customers. Users have shaped Twitter by inventing ways to directly reply to others and through third-party applications. Twitter has expanded far beyond its initial purpose and now plays a role in real-time information sharing during events like wildfires or crises like gas shortages.