The book starts really strong. The first chapters are catchy and relevant and they are very well written, too. Additionally, it is methodologically sound and some of their findings are interesting. Regretfully, at some points it becomes quite repetitive (in terms of methods and results) and, the methodology is sometimes unconsistent, unclear (i.e. I'd like to fully understand how the searches were made) and even questionable.

Actually, what I found to be more controversial is the decision of comparing Google Maps and Wikipedia. Mainly because they are very different in purpose and contents, but also because I believe that OpenStreetMap would have been a fairer comparison or bridge between the two. It is true that there are some mentions and comparisons to it, but the book claims to focus only oncomparing Google Maps and Wikipedia alone, and therefore, OpenStreetMap is something accessory and not as extensively or consistently as the previous ones.

In any case, just because it raises so many questions and comments that I'd love to discuss with their authors should I had the chance, I believe it is worth reading and I would recomment it despite it didn't match my initial expectations (which admittedly were very high).