It's interesting how anonymous users just now were engaging in fun ways just by dragging -- moving the squares on top of each other, or in a line, or back in or

It's interesting how anonymous users just now were engaging in fun ways just by dragging -- moving the squares on top of each other, or in a line, or back in order -- without being explicitly told what to do. Of note, node.js and Socket.IO make this kind of demo quite easy to do, if you want to do it with open technologies