This document discusses personalized information services that use web 2.0 and open source tools. It defines personalized services as a current awareness service that is fully user-oriented by providing individualized and tailored information to maximize user satisfaction. It describes accumulating relevant information from various sources like email alerts and RSS feeds. The process involves analyzing user feedback, organizing vast web resources according to subject domains, and providing value-added information to users. Examples of customizing services for engineering fields are provided. The document also outlines various web 2.0 tools like social networking and instant messaging, as well as open source content management, messaging, and mailing applications that can help create and deliver personalized information services.