The identity of the host caches is rather ambiguous, rather akin to that of the users themselves. Trying to shutdown host caches would be almost as impractical as attacking the users themselves. The only purpose the caches really serve anyway is to get your foot in the door, so to speak, of gnutellanet.
As to going after the distribution sites, that is also futile because do you really think they can stop it from getting around?
The most they can possibly succeed in doing is making things less easy(hehe) than they already are.
[This message has been edited by DarthGummiBear (edited 07-29-2000).]