Marketing Tumblr partner to start searching images for brand info The Yahoo-owned blogging platform has signed a deal with Ditto Labs to peruse photos to figure out what people think of brands. By Matt WilsonAug. 19, 2014 SHARE Ragan Insider Premium Content To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.