Mediachest is a system that allows you to get in touch with other people to exchange books, cds, dvds and games. Contact is based on the research of materials in which you are interested and exchanges are carried out in person, but they are not mandatory with people who meet for the first time or do not trust it. As a further guarantee of credibility of the model implemented by Ebay was borrowed with a history of previous loans that accompanies each user. In this way their 'collections' are potentially made available to anyone with the ability to create interest groups and 'want list', ie lists of material you would like to enjoy. ƒ a system of free sharing, then, that triggers another chance to break the consumer system directed from above without appeal. The only serious reason why users do not form a coalition by providing its own resources is access to the tools necessary to do so in a reasonable time and with efficiency. This scheme is a great opportunity, which once again demonstrates how social networks have bright opportunities to reshape at will the forms of society.