This book documents the efforts undertaken by the EG AgentLink Special Interest Group on Agent Mediated Electronic Commerce, SIG AMEC. First and foremost, the book presents a roadmap of research and current technological development in the area of agent mediated electronic commerce. A particularly interesting part of this roadmap is the joint perspective on future developments. The book also contains a number of papers that fill in parts of this roadmap in a European context. Some of the papers present significant current R&D results while other papers indicate some clear directions for future research. The book is structured in topical sections on negotiation, markets, user preferences, and security.