Social Media Tumblr 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. 18, 2014 SHARE 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.