Writing Messages In Empty Space With GPS
meiocyte writes: "This New Scientist story about leaving messages in empty space seems very cool. You upload a message (or perhaps a picture, audio clip, etc.), it gets tagged with your GPS coordinates, and then anyone else who goes there gets to see/hear it. Every GPS-resolvable parcel of empty space will have its own web site!" Combine this with user-forums, and restaurant ratings could take on a whole new dimension. Update: 01/20 23:28 GMT by T : Oops -- looks like I duped Michael. Sorry.
The idea was that students could tag places as they saw fit.
You can read more about the projects here, and here.
Check out confluence.org, where people can post photos and descriptions of every long. lat. combination on the globe.