Pinterest is a new website to show your product images in a nice showcase way, pinboard they mean. But you can pin any images from any website that you doesn’t own or certainly there is a copyright issue. I think what I mean in clear already ! So pinterest added an option for webmaster to block their website from pinning as we can block search engines. So they introduced a meta tag to place in the website header to block from pinning. So block pinning need to add a html meta tag in website head tag
Again, there is a way to pin blocked content to pinterest.
BTW, don’t forget to follow us on :) and we allow pin our product images :P