The document discusses the concept of Web 2.0 and how it is difficult to define. While Web 1.0 focused on connecting people, Web 2.0 builds on that by allowing user-generated content through things like blogs and wikis. However, even the creator of the Web cautions against rigidly defining Web 2.0. It is best understood as an attitude rather than a technology, focusing on harnessing collective intelligence through services that scale cost-effectively based on user contributions that enrich shared data sources.