Kevin Campbell is an incoming freshman at your college. Kevin is frustrated by the cost of books, tuition, and expenses and he also needs to purchase a rather expensive laptop. In an effort to save money, Kevin beings a Facebook group finding other college students who need to purchase laptops. Soon, Kevin's Facebook group has close to 100,000 students. Kevin decides to collectively approach different computer companies to see if his group qualifies for a special discount. What business strategy is Kevin using to purchase laptops?