The problem is not LW itself, it's the people offering files to share on the Gnutella Network (or better to say, the music industry, etc....).
Whatever client you'll use (P2P Gnutella Network client), you'll find the same faked files. But with using the file filters and the "Look up with Bitzi" function you will gradually reduce the amount of faked files showing up in your search results.
How to use Bitzi How to use keyword filter 