But it wasn't the absurd amounts of sugar and calories, or the unique taste of the drink (which one reviewer described as a mixture of "sour birthday cake and Instagram likes" and "a creamsicle dredged in Pixy Stix") that made it so notable. Instead, it's how Starbucks was able to leverage social media to explode images of the beverages onto everyone's phones nearly simultaneously. During the five day window of availability, there were nearly 155,000 Unicorn Frappuccino posts on Instagram, turning ordinary Starbucks customers into an unwitting marketing army.