WP Pinner is a free WordPress plugin by Wilco & Mark to manage your Pinterest account. With this plugin you can easily auto-pin WordPress posts, schedule your pins throughout the day, auto-follow users to get noted and keep track of your account (CTR, clicks, likes, repins, reach, etc). This will definitely help you to get more out of your Pinterest efforts!
We we unable to download and try this plugin as the developers website requires you to enter an email address, then we got this message “As you might know we’re still beta testing our plugin, which means not everyone has access to to it yet. We’re currently sending it out in batches based on the number of people everyone referred. In other words: the more people sign up through your unique URL, the higher you’re on the list and the earlier you’ll receive your our plugin!”
More info: http://wppinner.com/