The document discusses how Web 2.0 is changing advertising agencies and the roles they need to take on. It outlines that Web 2.0 allows for more participation, collaboration, and two-way conversations. Agencies need to provide both entertainment and utility value to users, and adopt roles like collaborators, journalists, listeners and brand stewards to fuel engagement within Web 2.0 spaces and people's lives. The future of advertising relies on the value it can provide through more integrated and people-centric approaches.