Book excerpt: The relationship between citizens and city governments is gradually transforming due to the utilization of advanced information and communication technologies in order to inform, consult, and engage citizens. Citizen E-Participation in Urban Governance: Crowdsourcing and Collaborative Creativity explores the nature of the new challenges confronting citizens and local governments in the field of urban governance. This comprehensive reference source explores the role that Web 2.0 technologies play in promoting citizen participation and empowerment in the city government and is intended for scholars, researchers, students, and practitioners in the field of urban studies, urban planning, political science, public administration, and more.