Unless you've been living under a rock over the past few years, you would have noticed an explosion in ways that people interact, collaborate and exchange information online. We are probably undergoing the greatest technological shift since the advent of e-mail, and it'd probably hard to grasp all the ramifications that profound new change is heralding. Every year now, or sometimes every month, several new information terms and products enter our collective consciousness, terms like blog, Twitter, Digg, Facebook, MySpace, collaborative filtering, crowdsourcing, online social networking, and many, many others. It becomes harder and harder to keep track of what each one of them means, little less of how to use it or whether to use it at all. Many of them may just be passing fads, but it is hard to deny that put together they are part of some larger trend. However, it may not be so obvious what this trend is all about and one often can't see the forest from all the trees. From that point, Clay Shirky's book "Here Comes Everybody" can be best understood as a field guide that will take you on a guided tour of this new forest and explain its immediate implications for how we live our lives, work or play. It is a very well written book, written in an easy-going journalistic style. It brings forth many real-life stories and case analyses that help with explaining these recent trends. The book is informative without being bogged down in technical jargon. It is also a very gripping read, and once one starts reading it is hard to put down. I would recommend it to everyone who is interested in getting a big picture of where we are headed in terms of collaborative technologies.