[tomatotomato37]

How much of that was useful engagement though? One of the hot topics a week ago was ad fraud being so prevalent on Facebook and Google that it caused Uber to shift their whole strategy

https://news.ycombinator.com/item?id=25623858

[simonbarker87]

Our sales numbers, the only metric that mattered to the kind of business we ran was 10x even the best of the other methods