in your case swikan , sue them for slander and defimation of charactor. It seems like this guy is in europe. I have a better thought get a flight over there go to this guys house and put your foot in his bum hard enogh to make his head hit the ceilling. once your done with that let him know that if he doesn’t remove you link from all of his posts you will come back with a gun and finish the job in the morning 🙂
Don’t forget to tell him his kids names and his parents address this lets him know you mean business lol
I didn’t see your post when I made mine, but here is the fix and a great proccess to take with spammers and thier unethical hosting companies. I had made my post at http://wordpress.org/support/topic/176411