Pinterest was one of the apps Facebook announced last night that will be using open graph to post to user’s timeline. Pinterest briefly explains their new Facebook feature in a blog post. Essentially, once Facebook is authorized, your pins will be sent to your timeline in real-time.
The winner in all of this is clearly Pinterest, who will undoubtedly continue to grow exponentially with all of the additional exposure the network gets on Facebook. As we saw with Spotify, this summer, Open Graph integration certainly spikes user totals.