Free: The Future Of A Radical Price explains how offering things for free has moved from marketing gimmick to truly sustainable business strategy, thanks to the power of the internet.

Chris Anderson, businessman, entrepreneur, and Curator of TED, believes in the 'retailing' strategy. It's about selling consumer goods to customers through multiple channels of distribution in order to earn a profit.

By offering a larger selection of products online, companies can serve lots of small niche markets, which aggregates into the majority portion of their revenue.

But what about the most radical pricing of all – offering products for free? Anderson explains how this trend has developed, and what you can do to capitalize on it.