This is a wonderful little book about what the commons are, why they are important, and how they can and must be protected. If you're an anarchist, this is required reading. If you're some variety of non-anarchist socialist, this is still important, because although it's not workers' control (commons operate separately from employment) the commons are a great way to build dual power, and put power back in the hands of the common people. It even mentions the Free Software community by name as an example of a commons, so if you're reading this review, then you're already commoning. One potential criticism is that it isn't very academic, but to be honest, I don't think that matters that much. It's not trying to be an academic study of the commons, just a short introduction on how you can work the commons into your everyday life.