Abstract Despite the popularity of wikis in public and subsequently in the corporate environment, an empirical investigation of their benefits is still lacking. This study performs an empirical investigation with 174 corporate wiki end-users to evaluate their performance with wiki use in an information technology development project, based on a knowledge management task. Enterprise wiki end-user performance is evaluated by measuring user’s project efficiency, effectiveness and capacity development. Phantom Modeling, with a Structural Equation Model, is used to empirically test specific direct and indirect effects. The findings suggest that end-user’s efficiency and effectiveness is positively affected by information and system quality of enterprise wikis mediated via wiki use and user satisfaction. Moreover, end-user capacity development is positively associated with collaboration quality and knowledge sharing. Keywords: Enterprise Wikis, Collaboration, Knowledge Management, Employee Productivity, Web 2.0, Information Technology (IT), Individual Performance, IT Evaluation, Phantom Modeling, Structural Equation Modeling
