Part of Ignite session prior to #HACK4DK 2013 Sharing and exchange can be avant-garde art. Back in the 1960s a group of American artists build a network of open data. They exchanged and co-created artworks - postcards, pictures, small objects etc. - via the mail art network by sending and receiving it by mail. The idea was to create a network of ever-changing open-ended works of art long before the internet made it part of our everyday life.