Business Models Built on Free
In the book, "Free: The Future of a Radical Price", Chris Anderson lists fifty examples on free business models. These are broken into three groups, Direct Cross-Subsidies, Two-sided markets, and Freemium.
Free
The High Cost of Free
I built a website for a project. The project proponent got someone else to build a gimpy replacement from scratch. How could he toss a $20,000 website? Simple: he got it for free.