Traverse Internet Law has just received very interesting feedback on the use of the Internet Law Copyright Infringement Warning. A high volume "publisher" of web sites reported a 50% reduction in copying of its website copy with the placement of the warning on its homepages. If you are looking for a way to cut down on copyright infringement, you may want to consider the free copyright attorney warning button. Pick up the code for copyright law firm infringement warning button and simply paste it into your html.
And best of all, it's free of charge.