Drawing on rich, empirical case studies this innovative book provides a contemporary and comprehensive exploration of the plural, dynamic and precarious processes, materials, practices, interventions and relationships on social network sites, and their resultant power effects, when copyright and data privacy rights are at stake. In pursuit of this objective, chapters develop a cutting-edge conceptual power lens that brings together Actor-Network theory and Foucauldian scholarship on power. Applying this analytical framework to the case studies of Facebook (data protection) and YouTube (copyright), Asma Vranaki draws critical attention to underexplored and novel matters in digital regulation. These matters include resistance; the materiality of regulation; complex, contingent, fragile and dynamic digital 'regulatory spaces'; the contingency of power; law as a heterogenous 'assemblage'; the unintended consequence of local orderings; and the links between power and spaces. Ultimately, the author demonstrates that power effects are highly localised, precarious and contingent outcomes of manifold, complex and fluid alliances between diverse humans and non-humans. Advancing various contentions on how social network sites can be successfully regulated, the empirical analyses and multi-disciplinary approaches in this book will prove invaluable to students, scholars and practitioners of law, particularly those interested in regulation, data protection and copyright in social network sites.