Editor Engard assembles 21 articles from 25 international contributors to focus on mashups within the library environment. Readers with little knowledge of mashups will find chapters such as “What Is a Mashup?” and “Behind the Scenes: Some Technical Details on Mashups” especially helpful. Other portions of this book cover topics such as mashups in library Web sites, mashups of catalog data, and mashups and media (e.g., photos). Technical details should not overwhelm non-techies. Plenty of screenshots aid in comprehension, although a few seem too small to read easily. One strength of this title is the emphasis on experiences in actual libraries, for example, mashup integration at the Manchester City (NH) Library. One weakness is that little attention is given to mashup accessibility for people with disabilities. A timely and useful resource for those keen on this fairly new technology. --Stephen Fadel"