Looks like the Hollywood war on the Silicon Valley is gaining steam. We are a large chat/IM provider, not directly involved in any copyright-able content and the last 5-6 months have been exceptionally hard in the amount of bullying from MPAA and the likes because of their complaints about LINKS and other things- often plain text where users just talk about copyrighted materials!
What does Flickr have to do with Hollywood? They are using a method Pinterest provides so that people can't pin copyrighted content. A feature users who own copyrighted content most likely are happy they implemented.