The EditableWeb is not a new idea. It goes back to the fundametal roots of the vision for the web. It goes under several names, including the 'two-way' web and the 'writeable' web.

http://www.w3.org/1998/02/Potential.html

http://writetheweb.com/

http://www.readwriteweb.com/2003/04/20.html#a1

http://www.thetwowayweb.com/