Is your library getting every dollar's-worth out of that thousand-dollar database? Should you re-subscribe to that pricey e-journal? Are your indexes serving your users? Collection development and acquisitions librarians are facing new tough questions. Unfortunately-until now-these were tough and, for many, unanswerable questions. White and Kamal show how to utilize e-metrics to measure library performance and value in the digital age. Learn how to effectively use the electronic data captured from various network activities to manage library collections, budgets, and services. Using e-metric, the authors identify expensive and underused digital resources, visualize virtual patron behavior patterns, and construct new collection development strategies. Real-world examples demonstrate how to develop a locally-established library e-metric system and apply it with vendor usage statistics to critical collection management and financial decisions. Practical tips and detailed analysis illustrate the important application of e-metrics to help you better serve your users and run an effective library.