" This is a new spin on reciprocity. In traditional old-school reciprocity, people operated like matchers, trading value back and forth with one another. We helped the people who helped us, and we gave to the people from whom we wanted something in return. But today, givers like Adam Rifkin are able to spark a more powerful form of reciprocity. Instead of trading value, Rifkin aims to add value. His giving is governed by a simple rule: the five-minute favor. “You should be willing to do something that will take you five minutes or less for anybody. "

― Adam M. Grant , Give and Take: A Revolutionary Approach to Success