Horse and Buggy Taxi Service
Get a ride in minutes. Or become a driver and earn money on your schedule. Horse and Buggy Taxi is finding better ways to move, work, and succeed for today's modern gentleman or dame about town.
When you hit a button to be a driver or passenger, an AJAX call is placed to the server which tells it your location and your choice. The server adds you to the global list of users, and returns you that list. The map is then updated using that list, so you can see all the other users, including yourself.
If you zoom out far enough on the map, you will see other users (we haven't quite achieved global adoption yet).
It could be expanded with cosmetic changes, an actual database rather than a server-side array, functions for contacting the other users, user accounts, reporting, ratings, etc.