I wouldn't call that scraping a site though. That's just stealing bandwidth and any well built ISP or Host would have link protection in place. cPanel even has that built in to their console. So adding that may be a bit redundent if thats there already. I'm thinking he didn't mean bandwidth stealers but people who use a program specificaly made for taking all the images on a site and downloading them, hammering a site for however long it takes to get all the pics. Programs like that usualy forge the referrer to make make it look like the site itself referred the program. The trap is the way to go to catch those things since most never obey robots.txt.