Comment by n8ji

We've been using it internally as a debugging tool for the Geotrigger Service (https://developers.arcgis.com/en/features/geotrigger-service...), which is a geofencing API & SDK. We can make a mobile device spit out location updates and see them mapped in real time, see what the headers and content of the POST are, and figure out what needs tweaking. We wanted to generalize it as a free service to allow others to do the same and also explore how else it could be used.