I'm looking to start a retail, ecomm business in the early new year (if not before) and was looking for 'white space' where it fits my target audience, but nobody is utilizing the space. Then I remembered Tumblr. Thinking about it, I didn't even know that you could even RUN ads on Tumblr! Hell, it's not even in the 'tags' on GH, which is how low-key it is now. Ha! But it's worth giving it a shot on whether it's effective. Does anyone know of a person/company/brand that has run successful Tumblr ads in the last year (2016-current) that has written a case study about it?