The document discusses using Twitter for business purposes. It outlines four approaches: direct marketing, indirect reputation building, internal communications, and monitoring industry conversations. Some companies highlighted for direct customer service include JetBlue, Whole Foods, and Comcast. Event promotion and product news are other uses. Twitter provides real-time information and acts as a help engine. It also allows for open collaboration through APIs and apps. The document considers media opportunities like paid tweets and business directories on Twitter. It notes acquisition could use coupon tweets but must engage users and add value to avoid negative responses.