This is one neat idea. It reminds me of the self service kiosks that airlines have created. We enter our data into the airline reservation systems, print out our ticket at home, scan our ticket into a kiosk to check in and pay the airlines for taking us from point a to point b. With google base, given its 60 million user base, realtors, auto-dealers, job seekers and other use the user interface to upload content, label/tag it and have it indexed by Google. We are already seeing many examples of this for
jobs and
real estate.