If they want to be a bookmarking site that also recommends items, they need a way to unequivocally say, "I'm not interest". I get wood working an fashion recommendations. Then one day at the height of Zootopia they recommended some comics based on the story. Tried to figure out how to say no. Apparently I missed. Now I get Zootopia every 5th recommendation.
How much of that is Pinterest trying to surface something incorrectly based on their matching algorithms, vs. the people advertising Zootopia using poorly-chosen or intentionally broad targeting settings?