^ this : http://www.theatlantic.com/technology/archive/2012/02/why-pinterest-is-playing-dumb-about-making-money/253273/
They pretend that they don't care about making money off of users and we users pretend that we aren't the product.
1)We know Pinterest is driving truly massive traffic to retail sites, by some accounts more than YouTube, LinkedIn, and Google+ combined. It is, after all, a platform that's perfect for shopping!
2) We know Pinterest used SkimLinks to add affiliate links.
3) Affiliate links generate revenue....
And how to play the game
http://online.wsj.com/article/SB10001424052970204792404577227542820850590.html?mod=googlenews_wsj
Be selective.
Highlight only a few of your most popular or newest items so your profile doesn't look like an advertisement
Best quote elsewhere "It's like crack. for ladies"