I've just finished reading this book: it's thought-provoking and highly readable. Many of its peers are the former, but rarely the latter, and for this reason I'll admit that I was putting off reading it, even though it's a must read for me. So I was pleasantly surprised when I read it cover to cover in a day: couldn't put it down.
First of all it lays out the context for the need for change: why we're in this un-sustainable mess and why it doesn't need to be this way. Then it leads you through the major ways we can reduce consumption: product service systems (new services like car clubs and ride sharing), redistribution markets (ebay, freecycle, swapping) and collaborative lifestyles (co-working, landsharing). What distinguishes it from so many earnest tomes telling us to reduce waste, reduce consumption, be good and wear a hairshirt, is that it understands that this revolution has to be lead by consumer demand and great design, and that excellent profits are there to be made by companies who understand this. Given the enormity of the issues facing our planet, it is also hugely optimistic.
I found the sections on trust particularly useful and I'm waiting to see the first reputation platform emerge, bringing together our reputations on ebay, zopa, couchsurfing, relayrides etc. For me the only area of sharing that wasn't really covered was the creation of private syndicates and sharing of large assets between small groups of private individuals.
There must be two editions of the book as the one I read did cover many UK/European websites.
If you want to do your bit for the planet, understand the role of the internet plays in this, or find out where your company should be heading, I strongly recommend it.