Drawing on Verenius project case studies and conceptual contributions, this book situates public participation GIS (PPGIS) within the broader GIS and society debate. It addresses six core concerns: differential access to geographic information and technology, integration and representation of multiple realities of landscape within a GIS, identification of the potential beneficiaries of participatory GIS projects, development of placed-based methodologies and methods for more inclusive community participation in spatial decision making, situating PPGIS production and implementation in its local political context, and identification of community GIS contributions to geography and GIScience.