The book "Information Sharing on the Semantic Web" by Heiner Stuckenschmidt and Frank van Harmelen provides an in-depth analysis of the challenges and solutions in the field of information exchange within the context of the Semantic Web. Given the enormous amount of available information, the necessity for computers to better access the semantics of this information is emphasized. The authors discuss the role of ontologies and present approaches to overcome semantic heterogeneity in loosely structured environments, particularly on the World Wide Web. They design a framework aimed at addressing the issues of missing conceptual models and heterogeneous representations. The book is targeted at researchers and students engaged with the Semantic Web, offering both a comprehensive overview of the current state of the art and detailed insights into ongoing research on topics such as ontology design, metadata management, and the management of distributed ontologies.