A somewhat similar site: http://wecanv.as http://wecanv.as. Less experimental and artsy, but perhaps more useful. I've been using unlisted (private) canvases a

A somewhat similar site: http://wecanv.as http://wecanv.as. Less experimental and artsy, but perhaps more useful. I've been using unlisted (private) canvases as whiteboards during conference calls. Works quite nice.