Heather Wright-Porto said
1 year, 2 months ago: Lots of Pinterest scoop going around an many of my clients trying to figure out how to block their site.For the WP gurus out there…how do you do this?It’s not possible to do in the free WordPress.com right? But can it be done on a self-hosted WordPress (paid) blog?
Thanks!heather 
What if I don’t want images from my site to be pinned?
We have a small piece of code you can add to the head of any page on your site:
<meta name=”pinterest” content=”nopin” />
When a user tries to pin from your site, they will see this message:
“This site doesn’t allow pinning to Pinterest. Please contact the owner with any questions. Thanks for visiting!”