one thing I do if I'm not bothering with htaccess is to randomly name the files.
These leech sites use a numbering system to easily pull your pics, like 1-50 and such... if you're namimg the pics in a random way, it's too much of a pain in the ass for them to link hotten you.
Oh, the fusker guy was on GFY a few days back:
http://www.gofuckyourself.com/showth...hreadid=216204