HuffPo has that safe harbor for "user content" as specified in their ToS. The most obvious thing is the comments on their articles. If I cut/paste a NYTimes a

HuffPo has that safe harbor for "user content" as specified in their ToS. The most obvious thing is the comments on their articles. If I cut/paste a NYTimes article into a comment on their page, they can't be sued for it. For content that an agent of their's posts, they enjoy no such safe harbor. EDIT: Back when the MPAA was looking for YouTube's records with IP Addresses, people speculated that they'd pour over them to see if Google employees were either uploading or viewing this content since if you have knowledge of infringing content, you are liable. As for why they haven't been sued, I don't know.