
Lessons on building a viral consumer app: The story of Saturn

To your point, I think if you’re building a vertical social network, you need verticals that are inherently social—that people like to talk about. Otherwise, it’s too hard to force connections and conversation around it
Jonathan Lai • The Founder's Dilemma: To Compete or Unbundle | Andreessen Horowitz

Not only does a product have to appeal to the hard side of the network, but as I discuss in “The Killer Product,” the most successful network effects–driven apps are also sometimes dead simple. They eschew a long list of features and instead emphasize the interactions among people using the app.
Andrew Chen • The Cold Start Problem: How to Start and Scale Network Effects
