Shortcode for Wordpress that adds a Pin It button for Pinterest to images on rollover. Can be seen live at twoplus.us
Download the zip, extract it, and move it into your Wordpress installation plugins folder (wp-content/plugins/)
Enter your image url in the src attribute, title in title attribute, width and height (with proper CSS unit of dimension) in their respective attributes.
Example:
[pinImage url="http://placehold.it/200x200" title="My Image to Pin" width="200px" height="200px"]