Not worth it. This guy has been doing this for some time and has been contacted repeatedly. He operates with relative impunity because of his location and that of his host. Don't bother with him, you'll get no where. The only real outside chance at getting him shut down is through his host (though there's been little luck there).
There was a rather long discussion about this guy some time ago on DFL (archive.org link as DFL has been broken for some time).