Wired magazine editor in chief Chris Anderson follows the success of his earlier book, "The Long Tail" (about mining what might otherwise be seen as marginal endeavors to create great successes), with this exploration of how we can benefit in many ways--including economically--by giving things away. It's a great complement to Tapscott and Williams' "Wikinomics: How Mass Collaboration Changes Everything" in that it is a paean to the power of collaboration in our onsite-online world. Anderson's puckish sense of humor, furthermore, keeps what is in essence a treatise on Internet/Web 2.0 economics engaging and entertaining; his comments about another writer's half-hearted attempt to experiment with "Free" (pp. 232-233), for example, capture the spirit of his work as he dissects the work of that other writer (Steven Poole), then offers a parenthetical aside ("Rather than being a failed Free business model, it's no business model at all...sorry, Poole!"). He also puts his (and his publisher's) money where his mouth is: "Free" appeared briefly as a free download on the Internet, and a free abridged audiobook version remains available at http://hyperionbooks.com/free/. The printed (not-free) book begins with "Free 101: A Short Course on a Most Misunderstood Word," helps provide background often missing from thoughts about familiar phrases including Stewart Brand's "information wants to be free" (Chapter 6), and ends with pithy rebuttals to 14 thoughts commonly proposed by those who maintain that Free is not a workable economic model. His conclusion is both reassuring and grounded in common sense: Free does not mean that there is no room for profit; "...Free is not enough; It also has to be matched with Paid" (p. 240)--an idea far less radical than we otherwise might have expected to find among Free's numerous proponents.