Here's a tip that has worked well for years, because that site is FAR from the only site the rips content, keeping a htaccess code preventing them can be a pain or almost impossible.
However, to my knowledge no bots can submit a form, and you can pretty easly add form links to your site, like when clicking on a gallery or on a pic.. Surfers won't know the difference between it and a standard link, but making it impossible for a bot to rip your entire site...
