This document summarizes a presentation about measuring the impact and quality of online resources for libraries. It discusses challenges libraries face related to budgets, suppliers, technologies, politics, usability, and users. Two case studies are presented: a small UK higher education institution that implemented a local authentication solution to reduce administration burden and increase electronic resource use, and a commercial research library that renegotiated subscriptions, implemented identity management, and saw increased downloads and reduced costs per download. The presentation emphasizes negotiating with suppliers, using technology solutions, understanding user environment and behavior, and using traditional and social media to market libraries.