Well, these aren't everything, but these issues seem to be the most recurring. Good job, everyone!
Value of firstness
Exploration for its own sake
Art making versus tool building
Novelty versus virtuousity
Pleasing versus provocative art
New media critiquing versus emulating old media
New media finding its own voice
Value of cheapness
Value of collectability
Importance of cultural and historical moment
Importance of background and motivations of artist
Value of hype
Value of "artist's voice"
Value of collaboration