exp-sd.com is for experimental tests I make to do with new technologies or ideas we're planning for future work. These test will not be the finished article but they demonstrate what can happen with various software or coding.
This is similar to what you might find on a dating website where you enter your address and it finds nearby matches for you. This was a quick test that uses a Google API to get the longitude and latitude, then we work out the distances from there.
Finally, the results are presented on a Google Map, together with the search radius and results plotted on the map.
Added: 08 Jun 2016