I wasn't able to do it using an .htaccess file, since it seems that the mod_rewrite feature was disabled on the server. Now the cool thing was that I was able to cobble something together with PHP.

So right now I'm only allowing a few sites to hotlink...mostly ones that I frequent. Now if you've posted here and have a site that you've used some images from I'm not against adding you to the allowed list. Just drop me an email. Just as long as you aren't pulling to much data....I mean really...70%..wtf mate?