This document provides an overview of using Web 2.0 tools to market library services. It defines marketing as keeping in touch with customers to understand their needs and develop products and communications to meet those needs. The document contrasts traditional marketing approaches with Web 2.0 marketing, which focuses on collaboration, convenience and community rather than just product, price, placement and promotion. It then outlines an 8-step process for developing a Web 2.0 marketing plan, including identifying needs, researching the audience, setting objectives, crafting messages, choosing tools, implementing, and evaluating effectiveness. Specific Web 2.0 tools are also suggested for finding an audience and monitoring discussions online.