Chris Anderson, the creator of the Long Tail concept (The Long Tail: How Endless Choice is Creating Unlimited Demand: How Endless Choice Is Creating Unlimited Demand), is now focusing on another interesting topic, the economy of free.
His new book will be out next year, Free: The Economics of Abundance and Why Zero Pricing is Changing the Face of Business.
However, you can read about Free on an article he wrote in Wired magazine, Free! Why $0.00 Is the Future of Business.
The latest news and discussions on this argument can be found on Chris´s Blog on the posts tagged with the free keyword.