Viral Loop: From Facebook to Twitter, How Today's Smartest Businesses Grow Themselves

Many of the most successful Web 2.0 companies, including MySpace, YouTube, eBay, and rising stars like Twitter and Flickr, are prime examples of what journalist Adam L. Penenberg calls a "viral loop"-to use the product means having to share it with others. After all, what's the sense of being on Facebook if none of your friends are? The end result is a business that spreads rapidly, scales quickly, and has the promise to create staggering wealth. In this game-changing, essential book, Penen...