Well a virus reporting plug-in would be pretty good...that may files reported as viruses can be scan by the network and if they are found as a virus they would be deleted and the creators I.P. traced... so also I think it would be a good idea for the files to have An I.P. STAMP on them or like limewire automaticly enscribes the files with an I.P. stamp so that if they are ever report as viruses,trojans,worms,ad-ware,hacks etc... they can be traced to their originators...for example you could trace everyone that has limewire pro. bootleg...you should remove those files off the network...because i know that you arent happy about that are you? all anybody has to do is search limewire pro. in the free version and downlaod it and install... another good idea is to put an activation key on limewire pro so that people will really have to buy it...