I don’t know whether a computer can “reach” a gadget on iGoogle.

The basic Gadgets test concept is to make a gadget that gathers (weather or) data and formats it for display on an aio.  Poll this gadget (if possible) from the aio (in the test case represented by my PC).

If it isn’t possible to poll a gadget from another computer, then I could have the gadget periodically write to a text file on my own server.  This text file could be titled 465782ED49009F0B, or whatever the MAC address is of the aio.  The aio could request its own file from the server.  The file would contain only the most recent command, or could be a string of commands.

Next, how would the aio confirm receipt?  I guess by deleting the file, or deleting the contents of the file.

Now, how about if data needs to go the other way?  What if I wanted to make a gadget that passed data between two objects?  Then do files need to have input and output sections?  Or do there need to be two files?

And, is FTP harder than HTTP?