Hi John!
Looking into future it could be a good idea for high bandwith users to connect multiple superpeers (or to be a superpeer itself and connect different other superpeers,
see images here).
Question: How do you find a super peer with a host cache? By getting a lot of IPs from pongs, test them all until you finally find a new superpeer? This try'n'error would take a lot of time (typically up to two minutes, similar to the Gnutella startup from old clients). The SUPERPONG will help to switch over to another/more superpeers immediately.
> I thought the whole idea of using supernodes was having only
one big horizon.
I didn't get that in the context here, could you explain plz?