We developed the unspun.com website because we saw that existing methods for community collaboration on the Web weren't good at consensus rankings. If you do a search for "sexiest movies," you might find sites that have lists of "sexiest movies," but each will be the opinion of the individual author. Wikis don't support consensus rankings. Imagine a large group of people editing and re-editing a wiki that purporting to rank the list of "sexiest movies." It wouldn't work--they'd step on each other. So that's the niche that UnSpun filled. UnSpun provides the right amount of structure to see the community consensus on what's the best or the worst, the scariest or the funniest, the tastiest or the dumbest. The UnSpun site was up from 2006 to 2008. During that time over 20,000 different lists with over 500,000 items were created, ranked, and debated. This book contains the 250 most popular, interesting, and fun lists from the unspun.com website.