" The most insidious part of the traditional marketing model is that “big blowout launch” mythology. Of course, equally seductive is the “build it and they will come” assumption that too many people associate with the Web. Both are too simple and rarely effective. Remember what Aaron Swartz realized. Users have to be pulled in. A good idea is not enough. Your customers, in fact, have to be “acquired.” But the way to do that isn’t with a bombardment. It’s with a targeted offensive in the right places aimed at the right people. Your start-up is designed to be a growth engine—and at some point early on, that engine has to be kick-started. The good news is that we have to do that only once. Because the next step isn’t about getting more attention or publicity. The endless promotional cycle of traditional marketing is not our destiny. Because once we bring our first customers in, our next move is to set about turning them into an army. "
― Ryan Holiday , Growth Hacker Marketing: A Primer on the Future of PR, Marketing, and Advertising