You got it man. Bearshare is much too far on the commercial side. Perhaps they will even try to play out their influence on the gnutella network.

The thing about the virus is this: it spreads all around the gnutella net, but bearshare users are just not experienced enough (no offence!) to spot it at once, so bearshare will be the main spreading client.

Always remember: No sensible user would EVER download an executable from the gnutella network.