Conan O'Brien is worried about BuzzFeed -- specifically, he's worried about the quality of their trademark lists as of late. Sure, they're still exploring some classic topics, from Zac Efron to dogs to Legos, but there just seems to be something a bit troublesome about their recent list-making attempts.

On last night's 'Conan,' the late night host presented some of the popular website's newest lists, and they really are more than a bit disturbing. No, really, how did they even find those Craigslist killers? Is the photographer okay? That's a big knife!