[Air-L] readings for undergrads on uncompensated labor of the internet

Good people, I'm looking for a good reading or other media--ideally short and accessible to undergrads--to introduce the concept of companies profiting from the uncompensated labor of user-generated content and other online behavior. What has worked in your classes when you have introduced this concept? Many thanks! -- Alan Bilansky alanbilansky@gmail.com (201) 743-8670