I would like to add a big BUT though - if home or even in-store 3D printers take off and "just works" I believe there will be a huge opportunity for a marketpla

I would like to add a big BUT though - if home or even in-store 3D printers take off and "just works" I believe there will be a huge opportunity for a marketplace like this. So maybe this will be a prime buy candidate for Makerbot/3D systems or Shapeways some time in the future.