Pinterest is problematic for marketers, partly because it may have shooting star syndrome, with its user-base plateauing and brands can't get Twitter-like traction. Unlike Twitter, where brands and celebrities dominate the most-followed lists—the top brand on Pinterest has less than one-tenth the followers of the top individual user. And Pinterest's user interface is limited for brands because you can only post things, like them, and follow people. The few brands that have tried to be innovative in the medium have had little success in terms of adding followers. May be they can take a cue from people who have been successful there by keeping it simple: lots of pictures of food and fashion.