I'd venture to say that 90% of the content is third party content used without permission. The only saving grace is that most of it is commercial images from ez

I'd venture to say that 90% of the content is third party content used without permission. The only saving grace is that most of it is commercial images from ezines and retailers who will benefit from the traffic and so have no incentive to sue. YouTube was 90% third-party content when it started out, and companies had a MUCH larger incentive to sue. YT made out fine, so I wonder if those repercussions will affect Pinterest in any way.