Recruiters want to make the best use of their time, so they go to the source with the largest number of listed professionals, while at the same time professionals want to list their names on the site with the most recruiters visiting. Such one-hand-shakes-the-other self-reinforcing upward spirals are known as Network Economies22: the value of the service to each customer is enhanced as new customers join the “network.” In such a situation, having the most customers is everything, and Marini knew exactly how this game was played: rapidly scale or die.

