Here’s the Wiki Dictionary definition for Postdigital:
Postdigital (Adjective). Of or pertaining to art forms that address the humanization of digital technologies through interplay between digital, biological, cultural, and spiritual systems, between cyberspace and real space, between embodied media and mixed reality in social and physical communication, between high tech and high touch experiences, between visual, haptic, auditory, and kinesthetic media experiences, between virtual and augmented reality, between roots and globalization, between autoethnography and community narrative, and between web-enabled peer-produced wikiart and artworks created with alternative media through participation, interaction, and collaboration in which the role of the artist is redefined.
A useful starting point for discussion. It being a wiki I guess we can all contribute and redefine the term as we go along…. apparently it ‘needs severe pruning’!