Pinterest drives more traffic than Google+, YouTube and LinkedIn combined. This is why we have coded this plugin that will pin images from your posts automatically to pinterest.com.
Just install and forget your Pinterest account as Pinterest Automatic will do all the pinning work for you.
Key Features
Pin unlimited number of images: Pinterest Automatic can pin from one image to all images from the posts directly to your Pinterest account.Bulk Pin: Posts can be queued for pinning in bulk. Select the desired posts, and the plugin will pin them one by one according to the set schedule. Number of images to pin per post can be set from one to all.
Automatic Images detection: Pinterest Automatic auto-detects images from your post then list them, where you can decide which images should be pinned.
Automatic boards detection: Pinterest Automatic will auto-detect boards in your Pinterest account so that you can choose which board you want to pin images to.
Queuing System: The Plugin queues images that are eligible for pinning in the queue and pin them separated by a random interval. That allows the pinning of an unlimited number of images without any problem.
info: http://codecanyon.net/item/pinterest-automatic-pin-wordpress-plugin/2203314