For this ebook we invited researchers to explore the possibilities and limitations of Semantic Search. In recent years we have witnessed an impressive advancement of research regarding the theory of semantic technologies as well as regarding the (experimental) development of semantic tools, especially in the W3C context and in the context of the constantly growing Linked Data and DBpedia community. This ebook focuses on the question of how semantic technologies, such as information annotation and extracting techniques, resource description (RDF) languages and ontologies, or reasoning engines are used.