Someone wrote about a honey pot trap for robots. They made a new directory and added it to the robots.txt as do-not-enter. All IPs that hit the directory where

Someone wrote about a honey pot trap for robots. They made a new directory and added it to the robots.txt as do-not-enter. All IPs that hit the directory where banned. If the sites that scrap your content do it from servers with fixed IPs, then you could go hunting and try to block them.