This document discusses using Web 2.0 applications as information awareness tools for libraries. It describes how blogs, RSS feeds, social bookmarking, aggregators, and social networks can help libraries share information about new resources and research with researchers. Specific examples of how Hagerty Library at Drexel University and the Indian Institute of Geomagnetism use these tools are provided. The document also notes challenges for libraries in India and a vision for increased collaboration using Web 2.0 applications.