After all, one of the hardest lessons we learned from that period: It wasn’t enough to build the app, you needed to also grow a critical mass of users. Without the right users there at the beginning, a user-generated content product would inherently be too shallow on content. Low engagement would lead to more low engagement.

This is the classic social media chicken-and-egg cold start problem. Every Silicon Valley PM has likely heard the stories about how Twitter and Facebook's critical keystone metrics were similar: get a user to follow some minimum number of accounts. Achieve that and those users turn into WAUs, or even better, DAUs. Users failing to follow enough acc... See more

First, does the product have a network? Does it connect people with each other, whether for commerce, collaboration, communication, or something else at the core of the experience? And second, does the ability to attract new users, or to become stickier, or to monetize, become even stronger as its network grows larger?