The Economics of Free?

Listened to this podcast on the way to visit mom and dad's yesterday. Highly recommended!

Chris Anderson talks with EconTalk host Russ Roberts about his next book project based on the idea that many delightful things in the world are increasingly free--internet-based email with infinite storage, on-line encyclopedias and even podcasts, to name just a few. Why is this trend happening? Is it restricted to the internet? Is there really any such thing as a free lunch? Is free a penny cheaper than a penny or a lot cheaper than that? The conversation also covers whether economics has anything to say about free.