Introduction: Configuring User-Designer Relations: Interdisciplinary Perspectives.- Participatory Design: Issues and Approaches in Dynamic Constellations of Use, Design, and Research.- Design as and for Collaboration: Making Sense of and Supporting Practical Action.- User-Designer Relations in Technology Production: The Development and Evaluation of an 'Animator' Tool to Facilitate User Involvement in the Development of Electronic Health Records.- Lessons Learnt in Providing Product Designers with User-Participatory Interaction Design Tools.- A Break from Novelty: Persistence and Effects of Structural Tensions in User-Designer Relations.- Practicalities of Participation: Stakeholder Involvement in an Electronic Patient Records Project.- Bottom-up, Top-down? Connecting Software Architecture Design with Use.- Global Software and its Provenance: Generification Work in the Production of Organisational Software Packages.- Concluding Remarks.