The document discusses how libraries are adopting social media and web 2.0 technologies to better serve patrons and remain relevant, as outlined in the Library 2.0 concept. It examines challenges libraries face in implementing these new services, such as choosing which technologies to adopt from the many options and ensuring sites are constantly updated. The document also notes privacy concerns that arise from users sharing information online and the need for libraries to protect patron privacy. Adopting social media allows libraries to connect with users in their online communities.