My latest SocialEarth post (HERE) explores the relationship between web 2.0 companies, the book "Free" by Chris Anderson, and the world of social enterprise. Please check it out here: While I advocate for the positive aspects of "free" in the post (mostly because that's where I stand), I also wanted to share the following NPR series that explores both the pros and cons of free. Enjoy! Part 1: Free For All? Profits Can Be Elusive Online Part 2: Web Firms Find Paths To Profits: Free Vs. Fees Part 3: Musicians Look For Pay In An MP3 World