There are deeper books on this subject out there but that doesn't mean that, even at it's current price (2GBP), you should dismiss it. Scoble and Isreal delve into the expectations, benefits and downsides of contextual data collection and analysis, predominately via mobile platforms.
The first half of the book addresses future concepts, innovation and practical applications of the world viewed and harvested by large, and small, companies -- to best serve our needs, wants and whims. It's going to be a great world...maybe! There's plenty of examples given; although none which will surprise most savvy readers. And it's all written in a straight-forward, appeal to all language. I didn't find this half of the book that surprising, nor did I find it particularly deep in information. It served a purpose, but I do have an interest in this area, generally speaking, so that might account for my impression of it.
The back end of the book; especially the health, and data privacy chapters were quite a bit more interesting. The writers highlight the flip-side of the 'wonderfully contextual' world with the stark realisation that insurance companies might just not want you to be in tip-top health all the time. And who owns the data anyway? It's highlighted as a worry and rightly so. This is serious when it comes down to it all.
All-in-all a coffee table book that doesn't particularly tax the reader, but there are some thinking points to be had. I'm not sure I'd have paid full price for it, given that you only have to watch Scoble on any podcast or interview to hear pretty much the full contents of the book given by him.
If you're really interested in the future (once you've finished AoC) that they are talking about, a great (fictional) read is Sycamore (Near-Future Dystopia) [Kindle Edition] Craig A. Falconer. The amount of overlap between the two books is very, very apparent. Highly recommended.