The book that catches the crest of Web 2.0 and shows how any business can harness its power by increasing whuffie, the store of social capital that is the currency of the digital world. Everyone knows about blogs and social networks such as Facebook and Twitter, and has heard about someone who has used them to grow a huge customer base. Everyone wants to be hands-on, grassroots, and interactive, but what does this mean? And more to the point, how do you do it?...........