You totally miss the point: I search for pictures. I look for jpg. You tell me to filter out jpg.
Bad idea...

What i want, is Limewire to display (by collapse or other ways) all hosts which have a file.. Then can i block out each host manually. If LW refuses to do that in any coming version, i think that stands as a proof.

And, you dont either explain how the spam works... And im talking bout 30-100's of hosts which has the same file, no matter what the file is named. "xxclslskkgkgdsglsfkgijfgjjsdgjhsfdkjghsfg" and within a minute will it show up on multiple (30+) hosts.