I've been reading Chris's Blog for a long time now. I was looking forward to read his book. I must say I feel a bit cheated.
Let's be fair, if you lived in cave for the last few years and never used any social media (facebook, twitter etc...) then this book might come handy.
I try to review books one or two months after reading them, just to see there was important things to learn. Unfortunetaley I can't remember anything good about this book. It's been very well marketed, during the launch you couldn't miss it.
The book has no structure whatsoever, it's hard to read and never know where the book is heading. You really see it's been written by two different people, the tone is confusing, there is no style.
It also feels like re-reading the same blog post all over the books but written differently. I've read a few books written by bloggers (Crush it, Escape Cubicle Nation, Power of Less, 4 hours week, Seth Godin, Tom Peters etc...) and have always been impressed by them, you can't write a book like a blog (and vice versa), you have to construct the argument, build it and give more details than just giving some general feelings on how you should use social media.
Overall I would say that social media is just using common sense, don't spam people and create useful content. I think Chris is losing it, I can see he's struggling to renew his topics on the blog, by writing this book he totally lost me.
Remember, social media is a tool, if you haven't got anything interesting to say it's not gonna help you.