Essay

Viral Effects Are Not Network Effects

James Currier (NFX) · nfx.com Free Intermediate

This essay draws the exact line the question is circling: getting users to bring more users (viral, referral) is a different thing from a product that gets more valuable as more people use it (network effects). Currier, a longtime founder and investor, shows why the two get confused (Facebook had both) and why only one gives you lasting defensibility. Read it to sharpen whether you want spread that fades or value that compounds.

  • Viral and referral loops are about cheap acquisition; network effects are about retention and defensibility, and they run on different playbooks.
  • Having virality does not mean you have network effects, and chasing referral mechanics can distract from the harder, more durable work.
  • Viral channels are always shifting, while network value tends to hold, so lean on the one that keeps paying off.
Open on nfx.com ↗

The question it answers

  1. What actually makes a product spread by word of mouth versus needing an explicit referral program?

Read with it

  1. If you want word of mouth to be intentional, start with why people share at all. Berger's research pins it down to six... Jonah Berger (Wharton) Book · Book, about 256 pages Contagious: Why Things Catch On Jonah Berger
  2. Godin's argument in this short talk is the answer to half the question: in a crowded market, the product itself has to be... TED (TED2003) Video · 17 min How to get your ideas to spread Seth Godin
eChai Partner Brands The partnership →