Websites that want to prevent pinning will now see this error message:
This site doesn't allow pinning to Pinterest. Please contact the owner with any questions. Thanks for visiting!
Pinterest is offering the code to any site owner although users can still download images and upload them to Pinterest as their own.
The code enables Pinterest to fence-sit on copyright and warns content owners to think twice about forgoing its 11 million repinning and rabid traffic drivers.
Ultimately, Pinterest is banking on hesitation. It's free, drives site traffic, and is joins Facebook's frictionless sharing with its app.
Pinterest has the content owners exactly where it wants them.