There's more to Pinterest than images.
Pinterest is all about images, right?
Content plays an integral part in helping you gain followers and repins.
On Pinterest, users build boards around interesting categories. Keywords play a prominent part in the structure of the site.
Each board has its own name and description. In addition, users can categorize each board into a standard Pinterest category.
Think about how to organize your boards both for users and the site's internal search engine. Users will use words to search for specific pins. Unlike Google, Pinterest's search facility is fairly simple. This will undoubtedly change as the site grows, but for now, long or complex search phrases do not produce results.
Posts also have descriptions, which are important, too. Place keywords in pin descriptions to make pins searchable. Because Pinterest has a built-in share facility with both Twitter and Facebook, keywords give posts greater exposure on these sites as well.
Via Kelly Lieberman