This document discusses the implementation of information commons in academic libraries based on Rogers' model of the innovation-decision process. It describes the agenda-setting and matching stages where libraries recognize needs for collaboration and one-stop services. The implementation stage involves restructuring spaces, services, and staffing to accommodate new models. Over time, libraries clarify relationships between services and routinize information commons as ongoing operations. Barriers to successful implementation often occur at later stages of redefining spaces and services or clarifying partnerships.