Viral Loop

A viral loop is a mechanism designed to encourage your users to refer others to your product or service, creating a self-perpetuating cycle of growth.

Example: 1. A user signs up. 2. They see value. 3. They invite a colleague to collaborate (or get free storage). 4. The colleague signs up. 5. Repeat.

A viral coefficient (k-factor) greater than 1 means exponential growth.