Google Maps just released a semi-realtime viewer of user edits. Sometime after the edits happen they pop up on the map in little balloons. It’s very similar to Twittervision (or Flickrvision — Radar post) in that you get a sense of what locations your fellow internet users find important. Aside from gaining buzz the viewer will also encourage people to edit locations (there’s a handy box in the top right). Watching the screen for a little while compelled me to correct the placement of my house.