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title: "Viral Loop"
type: concept
tags: ["viral", "referral", "network-effect", "growth"]
last_updated: 2026-04-26
---
## Definition
病毒裂变机制——通过推荐程序、分享激励和网络效应使用户在产品使用过程中自发向他人传播从而实现零成本指数级用户增长的机制。K-factor = 邀请率 × 接受率K > 1.0 意味着指数级自然增长。
## Core Components
- **邀请机制**:内置分享入口,降低分享摩擦
- **激励设计**:邀请人和被邀请人双方都获得价值
- **接受率优化**:落地页体验、注册流程优化
- **K-factor 追踪**:每次迭代后重新测量 K-factor
## Source
- [[marketing-growth-hacker]]Marketing Growth Hacker Agent
## Aliases
- Viral Growth Loop
- Referral Loop
- Self-Reinforcing Growth