Michael Zimmer discusses the role of libraries in the digital era and issues surrounding user privacy with Library 2.0 initiatives. While Library 2.0 aims to enhance user experience through personalization and social features, it also risks compromising user privacy through collection of personal data. Zimmer argues libraries should pursue Library 2.0 cautiously, collecting and sharing data anonymously and following best practices for privacy. Libraries must affirm their role in protecting user privacy and address privacy complexities, rather than retreat from traditional stances.