Follow the rules
Owning your content
As is the way with Facebook, Pinterest’s terms for brands state that any content you upload onto your profile essentially remains the property of Pinterest, even after you delete your account. They state specifically that “Pinterest and its users may retain and continue to use, store, display, reproduce, re-pin, modify, create derivative works, perform, and distribute any of your User Content that other users have stored or shared through Pinterest.” The inclusion of users here is quite vague as it doesn’t cover whether this use or modification of your works extends beyond the Pinterest platform, which may cause concern for many brands.
Use of information
Via Brian Yanish - MarketingHits.com