Add Pinterest-Friendly Images
With Pinterest being a good source of traffic, it’s a great idea to update your old blog posts to add Pinterest-friendly images and pin them. On my blog, I use a plugin called Social Warfare, which apart from all its other superb features, helps me to add a Pinterest-friendly image that is pulled when someone hits the Pin button. By quietly adding images to old posts and pinning them, I am bringing old posts into the forefront via Pinterest.
(Source: Corinne Rodrigues at BlogHer)