Here's an update on my correspondence with Amazon, regarding the pinning of their images on Pinterest - but first a bit of background:
Amazon TOS clearly state that you can only use their product images, providing you link either the image, or the text relating to that image (which must be close to the image) to the Amazon product page.
If you Pin a page and the image is an Amazon Product Image, then if the link on the Pin goes back to your page and not to the Amazon Product Page, then it looks like you are in violation of Amazon TOS.
As an Amazon affiliate, I have been seeking clarification from Amazon on the use of images on Pinterest, to make sure my affiliate account is not jeopardised. This is the latest email I have received from them:
"I'm still researching to find out what the exact policy is for people that repin. It's quite possible if they are an Associate that their accounts could be closed, however I really want to ensure that I have concrete information to give you. I will continue to research and as soon as I have any additional information I will notify you via email."
So, we still do not have the definitive answer. It looks like there's several ways that Amazon can go with this:
1. Stick to their Terms of Service and insist that PIns that feature Amazon products are linked to the Amazon Product Page
2. Change their Terms of Service - particularly if they think it will lead to more sales!
3. Wait and see - which will leave us still wondering
In the meantime, it looks like providing you don't Pin your own pages, that feature Amazon Products OR you change the link to go to Amazon, rather than your page, then you are OK.
If others Pin your pages and don't change the link to go to the Product Page, then I do not see how you can be held liable for the actions of others. But they could be at risk if they are Amazon Associates.
I will keep you posted.