such as product complementarity. The success of iPod benefits from the ease of use of its software complement, iTunes. iTunes’ revenue can only cover costs, but iPod’s hardware profit more than 50%. Functional connection is to find the connection between each link of its own products, rather than making decisions in isolation. If you want to increase the payment rate, you must increase marketing expenses and focus on collaboration between various businesses. The Economist is an example. It pays attention not only to its own unified style, but also to the role of marketing. It conducts precise marketing to target customers, and also pays attention to the similarity of its readers. Therefore, its payment situation is very impressive, and it has a global scale. Has millions of paying users. The life and death of paid content (The Economist's feature link) The crux of Baharat 's point of view is that it is not advisable to pay for pure, single content, but to make good use of the three connections that content can create. The value of content isn't shrinking, it's growing, it's just redistribution. Zhang Xiaolong said that many people are not willing to actively acquire information, but prefer sms marketing service passive acquisition, so the business model based on content distribution will be more efficient than content production itself. From a large time scale, the more efficient the information interconnection, the more difficult it is to pay for content.