Can You Sell It?
I haven’t seen a station sponsored pin or board yet, but I believe you can. Pinterest is all about visual content. Be picky about which clients you partner with and choose based on the custom content you can provide visually. If you’re weaving clients into a well-developed content strategy, listeners won’t care that some content is sponsored.
For example, weddings are a hot category on Pinterest. Partner with a local wedding boutique to share wedding and bridesmaids dresses. Pin their images (with the attached link to their site) over a period of time, mingled in with other wedding content like catering, music, decor, etc. You could include a pinned coupon, or a repin promotion to win one of the dresses pinned.
Create the content idea first with your demo in mind, then present it to the client. Be protective over your Pinterest account so it doesn’t become a dumping ground for client products and events.
Your followers on Pinterest will be paramount to any future success you have with clients. So create a content strategy and get pinning first to establish your station as a “pinner to follow”.