This volume very usflleuy brings together a range of case studies about the value made by different applications of social media, complemented nicely by some excellent categorization which allows for cross-study learning (e.g. technical , verticals , employment , non profits etc.) There are also some intriguing personal reflections and tales, and a bit of futurist prognostication by the side of the way. The merit of this book is its focus on real applications in real situations, with rich detail and references in each chapter. It also has a nice sampling of different global suitcases, avoiding what's often a US bias in many new trend books. One desires for some fuller treatment of certain topics (the categories have a range of coverage, which varies a lot) and more cross-case study breakdown and reflection by the author himself. The book also suffers from the inevitable problem that it will become dated very quickly, though that is not to decry the author for his noble attempt to capture an vital slice of social and business history in the building at this particular point in time. The volume is best read with a computer handy so one can refer and know face to face the magic of all the blogs, Facebook pages, tweets, and other media in living color and flow described in the essays. URLs are provided.