I didn't see this mentioned here yet. Got to check it out. The article says the pinned images will be link back to the originating website.
Bing users can now easily share the images they find with their friends on Pinterest. Starting today, Bing’s image search will feature the standard Pinterest ‘Pinit’ button on every photo details page, ...
Interesting to find out if the NOPIN code is being honored as MS could get some seriously bad PR over this if all the webmasters that think they're safe because of NOPIN is now finding things pinned all over the place.
Can anyone using NOPIN here that has images in Bing's image search report if those images can be pinned via Bing or not?