"...Advertising is YouTube's central mechanism for gaining revenue. This issue has also been taken up in scientific analysis. Don Tapscott and Anthony D. Williams argue in their book Wikinomics that YouTube is an example for an economy that is based on mass collaboration and makes use of the Internet. "Whether your business is closer to Boeing or P&G, or more like YouTube or flickr, there are vast pools of external talent that you can tap with the right approach. Companies that adopt these models can drive important changes in their industries and rewrite the rules of competition" "new business models for open content will not come from traditional media establishments, but from companies such as Google, Yahoo, and YouTube. This new generation of companies is not burned by the legacies that inhibit the publishing incumbents, so they can be much more agile in responding to customer demands. More important, they understand that you don't need to control the quantity and destiny of bits if they can provide compelling venues in which people build communities around sharing and remixing content. Free content is just the lure on which they layer revenue from advertising and premium services..."