Thanks Joel.
This would be a great addition to Mango as it would give an alternative option for devices that are on the internet but without a visible IP address, GPRS based devices for instance, to be able to send and retrieve parameters.
I use this very method with VTS for a commercial application I have with an oil company. The binary transmission is also smaller than using HTTP.
I can see some real potential uses for Mango in my commercial ventures, for some of the smaller projects were a full blown SCADA system is beyond their budget. Right now, it is purely for development and home automation.