Jes থেকে Groton, NY 13073, USA
Explores free from the definition to the different options in which free is used to make some business and the driving forces of Internet. Price tends to the marginal cost which in Internet is nearly zero. From this point, the author reviews all the alternatives to make a profitable business with a free foundation. Book is a couple of years old but examles are still current.
It kinda withers at the end but overall, a good story.