This document discusses the controversial concept of Web 2.0 and its implications for marketing. Web 2.0 refers to online applications that allow users to generate, share, and edit content. While some see Web 2.0 as transforming how people use the internet, others are skeptical of its impact. For marketers, Web 2.0 has substantially affected consumer behavior by empowering customers with greater access to information and choices. It has also shifted power from producers to consumers. The document aims to define Web 2.0 and analyze its potential as a marketing tool, as its effects on both consumer behavior and business strategy are significant but still being understood.