The question of having antivirus integrated to sharing software comes up once
in awhile, but the fact that any good antivirus software already does
everything we need tends to make such questions lead nowhere.

I suppose the next logical step is to have P2P apps nag you into downloading
and installing one, so at least some people will stop sharing the junk.

In the meantime, keep pestering the P2P developers on improving their antispam
features while I continue collecting hashes on that junk and spreading around
the [BearShare fullsize hostiles list] and the gnutella templist. ;]