I concur with the previous reviewers on the overall quality of the book. The examples are nicely chosen, and while the English equivalents could occasionally stand some improvement, that's just a minor quibble. It's always useful to have a wordlist ordered by frequency of usage -- surely the most efficient general review strategy. For those of us in the over-50 set the type size is definitely on the small side, but the print quality is clear nevertheless. A magnifier or right-up-to-the-nose viewing both work well; again a quibble.
The formatting facilitates concentrating on the Chinese, too: just highlight the character text on your first pass, then ignore all the other stuff on subsequent passes. Accuracy is good, with silly errors seemingly scarce (incorrect tone mark here and there in the examples, or an occasional word lapse [e.g., the pinyin for 'xiabian de shu' is given as 'shangbian de shu' on p. 24]).
Having spent about 800 one-on-one hours with a tutor over the past year, I've lately realized that in the heat of stimulating day-to-day discussions, new and reviewed vocabulary have taken somewhat of a back seat. Yong Ho's book has provided a very easy and profitable way to pass commuting time (but only if you're a rider, not a driver!).
I'm familiar with many of the student dictionaries available nowadays: favorites, for various reasons, are the Cheng & Tsui Pinyin Learner's Dictionary (ISBN 0887273165) and the newest Century Edition of the New English-Chinese Dictionary (ISBN 7532725421), along with Wenlin for the Macintosh (incorporating the DeFrancis ABC Dictionary). But for quick and painless spare-time review, this one has the right size, shape, content, and price.
Several years ago I swore off any product produced by Hippocrene Books, having wasted good money on some perfectly useless introductory material (in a language other than Chinese). This book has certainly raised them a notch in my eyes.