I have to think "ugh" when I read about this idea. Random three words to every square seems like chaos to me. These also take a lot of bytes to store. In the

I have to think "ugh" when I read about this idea. Random three words to every square seems like chaos to me. These also take a lot of bytes to store. In the US, every address or "delivery point" can be represented by 11 numerals: zip+4+2. If you read the barcodes on your received US mail, you will see the normally invisible +2. (zip+4 is usually granular to one side of a block or MDU mailbox cluster, and the extra two numerals represent a unique mailbox within the zip+4.) Amateur radio people have organized the world into grid squares, which are a bit larger as they are minutes of latitude/longitude in either dimension. However they are like postcodes, in that once you are familiar with the system you can glance at one and have a rough idea of whether it is near you or not, and where on the map it is. For instance, the White House in Washington is within grid square FM18lv. Introduction to the grid square system at [1] and a rudimentary mapping tool at [2]. I'm not sure if there is any reason why the grid squares couldn't be further subdivided. Even then, this wouldn't solve the problem in some places I've been: The barrios around Caracas are not only tightly packed in two dimensions, but they have been building their homes on top of each other, so a 3m x 3m square could very well contain five homes or more. [1]: http://www.arrl.org/grid-squares http://www.arrl.org/grid-squares [2]: http://www.qrz.com/gridmapper http://www.qrz.com/gridmapper