I am a member of one forum and there are fake sharing hosts' IP addresses published.If I find fake files,I usually use "browse host" button and when there is nothing or only FAKE files,so then I usually write this host's IP to the *.txt document(called LimeWire Fake Sharing hosts IP list),which I share and I publish these IPs at 5-8 internet forums and pages.
That's my COOL punishment for fake uploaders.