Does Facebook exploit its users? And where is the $100bn in the company's estimated value coming from?
This is not a new debate. It resurfaces regularly in the blogosphere and academic circles, ever since Tiziana Terranova coined the term "Free Labour" to indicate a new form of capitalist exploitation of unpaid labour - firstly referring to the viewers of classic broadcast media, and now to the new generation of social media participants on sites such as Facebook. The argument can be summarised very succinctly by the catch phrase: "If it's free, then you are the product being sold."