Malware warning from your first link.
Assuming you also view 50 posts per page, the only hotlinked images on the first page of that thread not hosted on imgur or PhotoBucket are Dot50Cal's two gifs, so either your AV software has blacklisted the-horror.com or one of the flash ads is setting it off. If it's the latter, and you're reasonably certain it's not a false-positive, make a note of the ads being displayed when the alert occurs and inform EviLore.
I'm aware of those threads, I meant like why aren't there actual awards (cash, a special tag, etc). Some of the gifs I see on here are insanely good and take a lot of time/thought. Maybe I'll volunteer to pay a cash prize starting this year if we can't get something official set up...
Oh, haha.