This document provides an introduction to the concepts discussed in the book "Unleashing the Ideavirus" by Seth Godin.
1. It argues that successful modern marketing relies on establishing interested consumer networks where people can market ideas to each other, rather than interrupting people with unwanted messages.
2. It explains that "ideaviruses" are ideas that spread contagiously from person to person, and outlines characteristics that help ideas spread virally.
3. The introduction poses questions about how businesses can use ideavirus marketing, and previews topics to be discussed in the book like the importance of "sneezers" who promote ideas to their social networks.