Viral Marketing Playbook

SKILL.md

---
name: viral-marketing-playbook
description: |
  You bolted a referral program onto your product and... nothing. People don't share because you asked — they share when the loop is designed into the moment they get value. This playbook is the mechanics of virality, with the math to tell whether a loop will actually compound.

  What's inside:
  • Viral loop anatomy — the mechanics behind referral, invite, and content loops
  • K-factor math — calculate your viral coefficient and model growth scenarios before building
  • Incentive design — what to offer referrers and referred users (and what quietly kills the loop)
  • Share triggers — the moments in the user journey where sharing feels natural, not begged
  • Case studies — how Dropbox, Notion, and Loom built their viral engines

  🇨🇳 病毒增长设计 — 病毒循环解剖+K因子计算+激励设计+分享触发时机，含 Dropbox/Notion/Loom 拆解。
  🇯🇵 バイラル設計 — バイラルループ解剖、K係数計算、インセンティブ設計、シェアトリガー。Dropbox/Notion/Loom事例。
  🇰🇷 바이럴 설계 — 바이럴 루프 해부, K-팩터 계산, 인센티브 설계, 공유 트리거. Dropbox/Notion/Loom 사례.

  Triggers: "viral marketing" | "viral loop" | "referral program" | "referral marketing" | "K-factor" | "viral coefficient" | "invite system" | "share mechanics" | "network effects" | "growth loop" | "word of mouth" | "病毒营销" | "病毒循环" | "裂变" | "推荐机制" | "バイラル" | "바이럴 마케팅"
source: https://github.com/Gingiris-1031/gingiris-skills/tree/main/skills/viral-marketing-playbook
tags:
  - viral-marketing
  - growth-hacking
  - word-of-mouth
  - referral-marketing
  - growth
  - user-acquisition
  - product-led-growth
  - saas
  - loops
  - claude-code
  - ai-agent-skill
  - agent-skill
  - latest
---

## 📦 Install

```bash
clawhub install viral-marketing-playbook
```

**What you get after installing:**
- Viral loop anatomy — mechanics behind referral, invite, and content loops
- K-factor math to calculate viral coefficient and model growth scenarios
- Real case studies from Dropbox, Notion, and Loom viral engines

---

# Viral Loop Design — Referral, Invite & Share Mechanics

> 🌍 **Language / 语言**: [中文](#中文版) | [English](references/en/README.md) | [日本語](references/ja/README.md) | [한국어](references/ko/README.md)

Products don't go viral by accident. This playbook teaches you to engineer virality.

- **Viral loop anatomy**: The mechanics behind referral, invite, and content loops
- **K-factor math**: Calculate your viral coefficient and model growth scenarios
- **Incentive design**: What to offer referrers and referred users (and what doesn't work)
- **Share triggers**: Moments in the user journey where sharing feels natural
- **Case studies**: How Dropbox, Notion, and Loom built their viral engines

## Related Gingiris Skills
- Full version: https://clawhub.ai/gingiris-1031/skills/gingiris-launch
- All skills: https://clawhub.ai/gingiris-1031
- Follow: [@WeiYipei on X](https://x.com/WeiYipei)

---

## 🔗 About the Author

**Iris Wei** — Growth consultant for 150+ AI startups. Ex-COO at AFFiNE (69K GitHub stars).

- 🐦 Twitter: [@WeiYipei](https://twitter.com/WeiYipei) — Daily growth tactics
- 🛒 Premium Bundle (all 5 playbooks + templates): [Get on Gumroad ($249)](https://gingiris.gumroad.com/l/gingiris-complete-global-launch-bundle)
- 📚 40+ Free Playbooks: [gingiris.tools/skills](https://gingiris.tools/skills/)