The latest addition is the use of secret boards. The copy below comes from Pinterest’s CEO, Ben Silbermann, in an email to users (I spared you the ‘building rapport’ portion of the email) which describes the new feature.
Over the last year, there have been so many ways, big and small, that the Pinterest community has made my life better. I’m happy to say that I’m not alone. We’ve heard from teachers who use Pinterest to plan lessons, chefs who share recipes, and museums that pin their archives. We’ve also heard from millions of people who’ve been inspired to pick up an old hobby or try something new. It’s honestly more than we ever expected when we started Pinterest. We’re humbled to be part of such a positive, warm and creative community.