APRS transmitters are typically tethered to a GPS or other sensor. Certainly not to Google maps... A user might choose to display his/her data as a KMS file on Google...
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APRS rides on Packet Radio, the concept being low/ no cost to use, shared nodes in a distributed system. If I want to set up a packet node, I agree to pass or repeat all packets that are from a user with a amateur radio license, are not spam and have a valid checksum when I'm not broadcasting my own messages. My modem inside my Digipeater or Terminal Node Controller hooks to a Ham Radio rig and translates data to audio tones for transmission. I may or may not archive the message, that is my preference.
If your a networking person, the term for the net style is "Modified Aloha Networking" or AX.25 Packet Networking. AKA Forward and Store networking.
Yes, there can be optional routing and internet back-bones... Just no real need for anything like DNS or Google....
The simplest network is two TNCs and two radios...
http://wiki.complete.org/PacketRadioUsers have to accept the fact that not every packet sent may make it anywhere, let alone around the world. If your data burst is not in range of a radio receiver nothing happens.
I'm curious why you would like to record every APRS message in the world? Are you an NSA contractor that is seriously bored?
Steve