McCracken's Law is a principle in the field of technology and innovation that suggests that the value of a product or service increases as more people use it. This phenomenon is often seen in social networks and software applications, where the user base contributes to the overall utility and appeal of the platform. The law highlights the importance of network effects, where each additional user enhances the experience for others. As a result, businesses often strive to grow their user base rapidly to maximize the benefits of McCracken's Law and create a competitive advantage in the market.