From the reviews:

“As the title suggests, this book is about the semantic Web, the standards and technologies that allow computers to understand the meaning of information posted online. … this book covers numerous aspects of the semantic Web in significant detail … . primarily intended for software developers, researchers, and practicing professionals who want to gain expertise in the fundamentals quickly. It may also be useful for students taking courses on the semantic Web. Summing Up: Recommended. Upper-division undergraduates through professionals/practitioners.” (M. B. DuBois, Choice, Vol. 48 (11), August, 2011)

“This book is a good starting point, especially since finding all of this information on the Web can be difficult. … for developers who are interested in establishing a toehold, this is a nice introduction that should serve for now.” (Jeffrey Putnam, ACM Computing Reviews, September, 2011)