I needed a restaurant guide because I am relocating to Seattle. I was EXTREMELY disappointed that these guys (read Microsoft) overlooked the most popular Asian cuisine: Chinese. While I personally enjoy other Asian foods, I found it incredible that the publisher missed Chinese food altogether and yet showed numerous listings for Japanese, Thai, and Vietnamese food. If the Chinese restaurants were included, MSN Sidewalk needs more qualified help in proper categorization or a QA process.
The book covers other cateogies and looks ok. But if you're looking for one good comprehenesive guide, this one missed the mark.