1. Practical and Portable: This compact guide is a must-have for anyone concerned about food safety. Its small size makes it easy to carry, fitting perfectly in a purse or glove compartment, ensuring you have it handy during grocery shopping.

2. Educational and Informative: The book provides clear, factual data on food additives, helping both laypersons and health professionals make informed decisions. It includes a useful labeling guide for fresh produce, highlighting the importance of PLU stickers.

3. Comprehensive Coverage: With over 1000 food additives classified by safety, allergen potential, and FDA GRAS status, this guide offers extensive information. However, some users feel it needs more depth on recent studies about GMOs and toxins.

4. User Feedback: Many users appreciate the book's straightforward approach and quick reference capabilities. However, some suggest it could benefit from updates to reflect current research on genetically modified foods and their health impacts.

5. Recommendations: While this book serves as a good starting point for understanding food additives, users recommend supplementing it with additional resources like Gary Null's books and Dr. Mercola's articles for a more comprehensive view on healthy eating.

6. Final Thoughts: Despite its limitations, 'Food Additives: A Shopper's Guide to What's Safe & What's Not' is a valuable tool for anyone looking to navigate the complexities of food labels and make healthier choices.